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\begin{document}


\def\RunningAuthor{Tarique Mahmood et al.}
\firstPage{4240}
\articleType{Original Article}
\receivedDate{26 Jan 2020}
\acceptedDate{26 Mar 2020}
\revisedDate{26 Feb 2020}
\journalVolume{20202, 11}
\journalIssue{3}
\journalDoi{ijrps.v11i3.2635}
\copyrightYear{2020}
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\def\journalTitle{International Journal of Research in Pharmaceutical Sciences}

\title{Pragmatic Toxicity Profiling of a Salubrious Polyherbal Combination of Tinospora Cordifolia, Withania Somnifera, and\textit{\space }Boerrhavia Diffusa in Swiss Albino Mice\textit{}}
\author{Arshiya~Shamim\textsuperscript{1},  
            Hefazat~H~Siddiqui\textsuperscript{1},  
            Tarique~Mahmood\textsuperscript{*}\textsuperscript{1},  
            Mohd~Haris~Siddiqui\textsuperscript{2},  
            Paramdeep~Bagga\textsuperscript{1},  
            Farogh~Ahsan\textsuperscript{1},  
            Mohammad~Shariq\textsuperscript{1}, 
            Saba~Parveen\textsuperscript{1}~\\[5pt]{\textsuperscript{1}Faculty of Pharmacy, Integral University, Lucknow, Uttar Pradesh 226026, India}~\\{\textsuperscript{2}Department of Bioengineering, Integral University, Lucknow, Uttar Pradesh 226026, India}}

\begin{abstract}
Acute and subacute toxicity screening of novel entrants in the stream of polyherbal formulations opens new doors towards the scientific approach of establishing them in the clinical market. Toxicity profiling asserts the humongous pharmacological potential that the natural herbs hold and establishes their safety profile. To exemplify this statement, this study further deals with acute and subacute toxicity studies of an olive oil-based polyherbal combination (PHC). This combination has been developed with the view that it proves to be clinically effective in diabetic cardiomyopathy and neuropathy. However, until now, the acute and subacute toxicity studies have been done on the developed PHC, and experimentally effective dose combinations have been identified. The follow-up part of this research includes the screening of the PHC against specific in vivo screening models in its initial stages. This research paper strictly summarises the acute and subacute profile of the salubrious polyherbal combination. Three herbs with strong literature background were selected: Tinospora cordifolia, Withania somnifera and Boerrhavia diffusa; and their crude extracts were prepared. The reported ED\ensuremath{_{50}} values of each of these plants were selected and mixed in 5 different combinations and subjected to Acute Toxicity studies. It was followed by the 28-days subacute toxicity screening of 9 different combinations that were elucidated from the acute toxicity study results. The findings were supported with recovery group studies to conform to any late toxicity symptoms of the polyherbal combination. The findings of this study helped in reaching some pathbreaking conclusions on the polyherbal combination designed. \textit{}
\end{abstract}\def\keywordstitle{Keywords}

\begin{keywords}Biochemistry,\newline Effective dose,\newline Hematology,\newline Histopathology,\newline Lethal Dose,\newline OECD Guidelines (425 \& 407)
\end{keywords}
\twocolumn[ \maketitle {\printKwdAbsBox}]
\makeatletter{\raggedright\textsuperscript{*}Corresponding Author\par Name:\ Tarique~Mahmood~\\ Phone:\ 9918681701~\\  Email:\  tmahmood@iul.ac.in
        \par}\vspace*{-11pt}\hrulefill\par{\fontsize{12}{14}\selectfont ISSN: 0975-7538}\par% 
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\section{Introduction}
Diabetes mellitus, one of the pandemic metabolic disorders, tops the list of pathogenic causes for end-organ failure \unskip~\citep{762891:18141485}. The two of the most common macroscopic complications associated with diabetes mellitus are Cardiomyopathy \unskip~\citep{762891:18141489} and Neuropathy\unskip~\citep{762891:18141490,762891:18141510}. The increasing diabetic population in the world and sarcastically decreasing medications that could prevent the pathogenesis of these complications leave us at crossroads of pharmacological management of diabetic complications. Hence, the world of natural herbs proves a silver lining in the cloud. In this view, a polyherbal combination has been designed in the discussed study with three herbs, namely Tinospora cordifolia, Withania somnifera, and Boerrhavia diffusa \unskip~\citep{762891:18141511}.\textit{}


\begin{table*}[!htbp]
\caption{\boldmath {Ratios of plant extracts in polyherbal combination for Aute toxicity studies } }
\label{tw-9f68bc11c5b8}
\centering 
\begin{threeparttable}

\def\arraystretch{1.1}
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\centering 
\begin{tabulary}{\linewidth}{p{\dimexpr.16\linewidth-2\tabcolsep}p{\dimexpr.1824\linewidth-2\tabcolsep}p{\dimexpr.1376\linewidth-2\tabcolsep}p{\dimexpr.16\linewidth-2\tabcolsep}p{\dimexpr.16\linewidth-2\tabcolsep}p{\dimexpr.20\linewidth-2\tabcolsep}}
\tbltoprule \rowcolor{kwdboxcolor}S.no. & Combination & Avg Animal weight (g; n=3) & T.cordifolia  & W.somnifera  & B. diffusa\\
\tblmidrule 
1 &
  C1 &
  20.73 &
  1: &
  1: &
  1\\
2 &
  C2 &
  22.55 &
  2: &
  1: &
  1\\
3 &
  C3 &
  21.65 &
  1: &
  2: &
  1\\
4 &
  C4 &
  22.55 &
  1: &
  1: &
  2\\
5 &
  C5 &
  24.66 &
  2: &
  2: &
  2\\
\tblbottomrule 
\end{tabulary}\par 
\begin{tablenotes}\footnotesize 
    
\item{(Note: Theratios were designed based OECD guidelines for oral acute toxicity studies.)}
\end{tablenotes}
\end{threeparttable}

\end{table*}

\begin{table*}[!htbp]
\caption{\boldmath {Developed ratios of PHC elucidated from findings of Acute toxicity studies } }
\label{tw-2f89bd3f4162}
\centering 
\begin{threeparttable}

\def\arraystretch{1.1}
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\begin{tabulary}{\linewidth}{LLLLLL}
\tbltoprule \rowcolor{kwdboxcolor}S.no. & *Dose level Combination & Avg Animal weight (g; n=3) & \textit{T.cordifolia} & \textit{W.somnifera} & \textit{B. diffusa}\\
\tblmidrule 
1.   &
  Normal control &
  21.55 &
  \multicolumn{3}{p{\dimexpr(\mcWidth{4}+\mcWidth{5}+\mcWidth{6})}}{NIL (20\% Glycerol)}\\
2.   &
  C5 &
  22.73 &
  2: &
  2: &
  2\\
3.   &
  C6 &
  22.65 &
  1.3: &
  1: &
  2\\
4.   &
  C7 &
  21.29 &
  1.6: &
  1: &
  2\\
5.   &
  C8 &
  23.45 &
  1.9: &
  1.3: &
  2\\
6.   &
  C9 &
  19.86 &
  1: &
  1.3: &
  2\\
7.   &
  C10 &
  20.78 &
  1: &
  1.6: &
  2\\
8.   &
  C11 &
  21.02 &
  1: &
  1.9: &
  2\\
\tblbottomrule 
\end{tabulary}\par 
\begin{tablenotes}\footnotesize 
    
\item{(*Note:The doselevels were selected based on the result of a preliminary 2-week acute toxicity study.)}
\end{tablenotes}
\end{threeparttable}

\end{table*}

\begin{table*}[!htbp]
\caption{\boldmath {Detailed Effects of toxicity induced by PHC in mice during 14 day acute toxicity study} }
\label{tw-1c0133b4e36a}
\def\arraystretch{1.1}
\ignorespaces 
\centering 
\begin{tabulary}{\linewidth}{LLLLLLLL}
\tbltoprule \rowcolor{kwdboxcolor}S.No & Parameters & \multicolumn{6}{p{\dimexpr(\mcWidth{3}+\mcWidth{4}+\mcWidth{5}+\mcWidth{6}+\mcWidth{7}+\mcWidth{8})}}{\cAlignHack Groups}\\
\rowcolor{kwdboxcolor} &  & Normal control & C1 & C2 & C3 & C4 & C5\\
\tblmidrule 
\multicolumn{8}{p{\dimexpr(\mcWidth{1}+\mcWidth{2}+\mcWidth{3}+\mcWidth{4}+\mcWidth{5}+\mcWidth{6}+\mcWidth{7}+\mcWidth{8})}}{\textbf{General appearance}}\\
1. &
  Avg. Initial Body weight (g) &
  21.02 &
  20.73 &
  20.47 &
  21.30 &
  19.86 &
  20.55\\
2. &
  Avg. Final body weight (g) &
  22.55 &
  21.55 &
  20.80 &
  21.85 &
  20.65 &
  21.88\\
3. &
  Stool Color &
    Black &
  Black &
    Black &
    Black &
  Black &
  Black\\
4.  &
  Diarrhoea &
  NIL &
  NIL &
  NIL &
  NIL &
  NIL &
  NIL\\
5. &
  Mucoid Stool &
    NIL &
  NIL &
  NIL &
  NIL &
  NIL &
  Sticky stool\\
6. &
  Food consumption in 24 hr (g) &
  35.00 &
  34.00 &
  36.00 &
  33.00 &
  32.00 &
  25.00\\
7. &
  Water consumption in 24 hr (ml) &
  18 &
  20 &
  22  &
  26  &
  23 &
  30\\
8. &
  Visible abnormalities &
  NIL &
  NIL &
  NIL &
  NIL &
  NIL &
  NIL\\
9. &
  Rate of respiration &
  Normal &
  Normal &
  Normal &
  Normal &
  Normal &
  Increased\\
10. &
  Drowsiness &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
    Observed\\
11. &
  Lethargy &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Observed\\
12.  &
  Rashes &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not Observed\\
\multicolumn{8}{p{\dimexpr(\mcWidth{1}+\mcWidth{2}+\mcWidth{3}+\mcWidth{4}+\mcWidth{5}+\mcWidth{6}+\mcWidth{7}+\mcWidth{8})}}{\textbf{Hypersensitivity reactions}}\\
13. &
  Skin color &
  Normal &
  Normal &
  Normal &
  Normal &
  Normal &
  Normal\\
14. &
  Eye color/pigmentation &
  Normal &
  Normal &
  Normal &
  Normal &
  Normal &
  Normal\\
\multicolumn{8}{p{\dimexpr(\mcWidth{1}+\mcWidth{2}+\mcWidth{3}+\mcWidth{4}+\mcWidth{5}+\mcWidth{6}+\mcWidth{7}+\mcWidth{8})}}{\textbf{Behavioral parameters}}\\
15. &
  Paw licking &
  Not Observed &
  Observed &
  Observed &
  Observed &
  Observed &
  Observed\\
16. &
  Paw Jumping &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not observed\\
17.  &
  Paw Biting &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not observed &
  Not observed\\
18.  &
  Mobility (No. of  movement in 15 min) &
  33 &
  32 &
  34 &
  34 &
  35 &
  27\\
19. &
  Mortality &
  Alive &
  Alive &
  Alive &
  Alive &
  Alive &
  Dead\\
\tblbottomrule 
\end{tabulary}\par 
\end{table*}

\begin{table*}[!htbp]
\caption{\boldmath {Hematological Studies} }
\label{tw-98369234220e}
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\centering 
\begin{tabulary}{\linewidth}{p{\dimexpr.15429999999999998\linewidth-2\tabcolsep}p{\dimexpr.10050000000000002\linewidth-2\tabcolsep}p{\dimexpr.08080000000000002\linewidth-2\tabcolsep}p{\dimexpr.07799999999999998\linewidth-2\tabcolsep}p{\dimexpr.09039999999999997\linewidth-2\tabcolsep}p{\dimexpr.07870000000000003\linewidth-2\tabcolsep}p{\dimexpr.08769999999999996\linewidth-2\tabcolsep}p{\dimexpr.07520000000000004\linewidth-2\tabcolsep}p{\dimexpr.07500000000000002\linewidth-2\tabcolsep}p{\dimexpr.09790000000000001\linewidth-2\tabcolsep}p{\dimexpr.08150000000000002\linewidth-2\tabcolsep}}
\tbltoprule \rowcolor{kwdboxcolor}Parameters & Normal control & C5 & C6 & C7 & C8 & C9 & C10 & C11 & Recovery Control & Recovery Group\\
\tblmidrule 
RBC Count  &
  7.52\ensuremath{\pm} &
  3.85\ensuremath{\pm} &
  7.55\ensuremath{\pm} &
  7.47\ensuremath{\pm} &
  7.52\ensuremath{\pm} &
  7.5\ensuremath{\pm} &
  7.5\ensuremath{\pm} &
  7.5\ensuremath{\pm} &
  7.50\ensuremath{\pm} &
  7.49\ensuremath{\pm}\\
(106/ \ensuremath{\mu}L) &
  0.061 &
  0.045* &
  0.05 &
  0.087 &
  0.023 &
  0.035 &
  0.026 &
  0.015 &
  0.02\# &
  0.03\#\\
WBC Count &
  8.77\ensuremath{\pm}  &
  2.03\ensuremath{\pm} &
  8.12\ensuremath{\pm} &
  8.19\ensuremath{\pm} &
  8.29\ensuremath{\pm} &
  8.24\ensuremath{\pm} &
  8.74\ensuremath{\pm} &
  8.70\ensuremath{\pm} &
  8.71\ensuremath{\pm} &
  8.69\ensuremath{\pm}\\
(103/ \ensuremath{\mu}L) &
  0.026 &
  0.183* &
  0.098 &
  0.393 &
  0.373 &
  0.32 &
  0.015 &
  0.021 &
  0.021\# &
  0.02\#\\
Platelet Cou- &
  1122.33\ensuremath{\pm} &
  491.33\ensuremath{\pm} &
  1119.33 &
  1113.33 &
  1120\ensuremath{\pm} &
  1118.667 &
  1085.33 &
  1123 &
  1117.67 &
  1119.33\\
nt (103/ \ensuremath{\mu}L) &
  2.517 &
  23.24* &
  \ensuremath{\pm}4.16 &
  \ensuremath{\pm}13.31 &
  2.646 &
  \ensuremath{\pm}2.51 &
  \ensuremath{\pm}37.84 &
  \ensuremath{\pm}1.00 &
  \ensuremath{\pm}2.51\# &
  \ensuremath{\pm}2.51\#\\
DLC: Eosino- &
  1.1\ensuremath{\pm} &
  0.09\ensuremath{\pm} &
  0.8\ensuremath{\pm} &
  0.833\ensuremath{\pm} &
  0.933\ensuremath{\pm} &
  0.9\ensuremath{\pm} &
  1.067\ensuremath{\pm} &
  1.133\ensuremath{\pm} &
  1.18\ensuremath{\pm} &
  1.173\ensuremath{\pm}\\
hils (\%) &
  0.1 &
  0.01* &
  0.1 &
  0.208 &
  0.153 &
  0.2 &
  0.15 &
  0.115 &
  0.02\# &
  0.02\#\\
DLC: Neu- &
  17.433\ensuremath{\pm}  &
  4.633\ensuremath{\pm} &
  17.043 &
  16.85\ensuremath{\pm} &
  17.093 &
  16.740\ensuremath{\pm} &
  17.4\ensuremath{\pm} &
  17.367\ensuremath{\pm} &
  17.127\ensuremath{\pm} &
  17.06\ensuremath{\pm}\\
trophils (\%) &
  0.153 &
  0.757* &
  \ensuremath{\pm}0.232 &
  0.573 &
  \ensuremath{\pm}0.11 &
  0.444 &
  0.2 &
  0.153 &
  0.127\# &
  0.08\#\\
Haematocrit  &
  44.057\ensuremath{\pm}  &
  19.72\ensuremath{\pm} &
  44.033\ensuremath{\pm} &
  44.237\ensuremath{\pm} &
  43.933\ensuremath{\pm} &
  43.943\ensuremath{\pm} &
  43.94\ensuremath{\pm} &
  43.703\ensuremath{\pm} &
  43.93\ensuremath{\pm} &
  44.007\ensuremath{\pm}\\
(\%) &
  0.031 &
  2.119* &
  0.015 &
  0.228 &
  0.775 &
  0.061 &
  0.12 &
  0.575 &
  0.053\# &
  0.025\#\\
Haemoglobin  &
  11.837\ensuremath{\pm}  &
  3.96\ensuremath{\pm} &
  11.947\ensuremath{\pm} &
  11.94\ensuremath{\pm} &
  11.973\ensuremath{\pm} &
  11.943\ensuremath{\pm} &
  12.07\ensuremath{\pm} &
  12.073\ensuremath{\pm} &
  11.943\ensuremath{\pm} &
  11.97\ensuremath{\pm}\\
(g/dL) &
  0.272 &
  0.147* &
  0.169 &
  0.164 &
  0.101 &
  0.119 &
  0.02 &
  0.006 &
  0.05\# &
  0.046\#\\
Blood Glucose level &
  133.667\ensuremath{\pm}  &
  233.00\ensuremath{\pm} &
  145.00\ensuremath{\pm} &
  147.33\ensuremath{\pm} &
  154.33\ensuremath{\pm} &
  155.00\ensuremath{\pm} &
  134.667\ensuremath{\pm} &
  136.667\ensuremath{\pm} &
  132.667\ensuremath{\pm} &
  134.333\ensuremath{\pm}\\
(mg/dl) &
  2.082 &
  2.646* &
  3.00 &
  3.055 &
  2.517 &
  6.928 &
  2.517 &
  2.082 &
  1.528\# &
  1.528\#\\
\tblbottomrule 
\end{tabulary}\par 
\begin{tablenotes}\footnotesize 
    
\item{All values are expressed as Mean \ensuremath{\pm}SD (n=3). The values were found to be significantly different at *p{\textless}0.05 when compared with normal control. The values of recovery group were compared with recovery control and the difference found to be non significant at \ensuremath{^{\#}}p{\textless}0.05}
\end{tablenotes}
\end{threeparttable}

\end{table*}

\begin{table*}[!htbp]
\caption{\boldmath {Serum Biochemistry } }
\label{tw-932535cb1dbe}
\centering 
\begin{threeparttable}

\def\arraystretch{1.1}
\ignorespaces 
\centering 
\begin{tabulary}{\linewidth}{LLLLLLLLLLL}
\tbltoprule \rowcolor{kwdboxcolor}Parameters & Normal control & C5 & C6 & C7 & C8 & C9 & C10 & C11 & Recovery Control & Recovery Group\\
\tblmidrule 
Total Cholesterol &
  75\ensuremath{\pm} \mbox{}\protect\newline 2.646 &
  177.00\ensuremath{\pm} \mbox{}\protect\newline 4.359* &
  74.667\ensuremath{\pm} \mbox{}\protect\newline 1.528 &
  71.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  71.667\ensuremath{\pm} \mbox{}\protect\newline 2.082 &
  74.667\ensuremath{\pm} \mbox{}\protect\newline 4.163 &
  73.667\ensuremath{\pm} \mbox{}\protect\newline 3.215 &
  72.00\ensuremath{\pm} \mbox{}\protect\newline 1.00 &
  71.667\ensuremath{\pm} \mbox{}\protect\newline 0.577\# &
  76.00\ensuremath{\pm} \mbox{}\protect\newline 1.0\#\\
Triglyceridres &
  34.00\ensuremath{\pm} \mbox{}\protect\newline 2 &
  134.00\ensuremath{\pm} \mbox{}\protect\newline 10.149* &
  33.00\ensuremath{\pm} \mbox{}\protect\newline 2.646 &
  33.667\ensuremath{\pm} \mbox{}\protect\newline 3.055 &
  32.00\ensuremath{\pm} \mbox{}\protect\newline 1.732 &
  35.00\ensuremath{\pm} \mbox{}\protect\newline 3.00 &
  37.33\ensuremath{\pm} \mbox{}\protect\newline 2.517 &
  34.667\ensuremath{\pm} \mbox{}\protect\newline 3.055 &
  33.00\ensuremath{\pm} \mbox{}\protect\newline 1.00\# &
  30.33\ensuremath{\pm} \mbox{}\protect\newline 0.577\#\\
SGOT (mg/dL) &
  27.079\ensuremath{\pm} \mbox{}\protect\newline 2.65 &
  248.00\ensuremath{\pm} \mbox{}\protect\newline 2.00* &
  28.00\ensuremath{\pm} \mbox{}\protect\newline 2.646 &
  28.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  25.33\ensuremath{\pm} \mbox{}\protect\newline 3.125 &
  27.33\ensuremath{\pm} \mbox{}\protect\newline 3.055 &
  25.33\ensuremath{\pm} \mbox{}\protect\newline 4.163 &
  25.667\ensuremath{\pm} \mbox{}\protect\newline 3.125 &
  27.33\ensuremath{\pm} \mbox{}\protect\newline 2.082\# &
  25.667\ensuremath{\pm} \mbox{}\protect\newline 2.082\#\\
SGPT (mg/dL) &
  26.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  304.33\ensuremath{\pm} \mbox{}\protect\newline 2.52* &
  26.00\ensuremath{\pm} \mbox{}\protect\newline 1.00 &
  24.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  26.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  27.33\ensuremath{\pm} \mbox{}\protect\newline 2.517 &
  29.667\ensuremath{\pm} \mbox{}\protect\newline 4.041 &
  25.667\ensuremath{\pm} \mbox{}\protect\newline 4.041 &
  20.667\ensuremath{\pm} \mbox{}\protect\newline 2.082 &
  20.33\ensuremath{\pm} \mbox{}\protect\newline 2.082\#\\
SAP(mg/dL) &
  156.67\ensuremath{\pm} \mbox{}\protect\newline 7.64 &
  421.00\ensuremath{\pm} \mbox{}\protect\newline 3.61* &
  151.67\ensuremath{\pm} \mbox{}\protect\newline 19.088 &
  166.33\ensuremath{\pm} \mbox{}\protect\newline 7.767 &
  225.00\ensuremath{\pm} \mbox{}\protect\newline 25.00 &
  175.33\ensuremath{\pm} \mbox{}\protect\newline 17.214 &
  171.33\ensuremath{\pm} \mbox{}\protect\newline 7.095 &
  168.67\ensuremath{\pm} \mbox{}\protect\newline 6.506 &
  162.00\ensuremath{\pm} \mbox{}\protect\newline 2.00\# &
  164.33\ensuremath{\pm} \mbox{}\protect\newline 3.055\#\\
Total serum Bilirubin \mbox{}\protect\newline (mg/dL) &
  0.4\ensuremath{\pm} \mbox{}\protect\newline 0.1 &
  2.37\ensuremath{\pm} \mbox{}\protect\newline 0.042* &
  0.3\ensuremath{\pm} \mbox{}\protect\newline 0.1 &
  0.4\ensuremath{\pm} \mbox{}\protect\newline 0.1 &
  0.5\ensuremath{\pm} \mbox{}\protect\newline 0.1 &
  0.7\ensuremath{\pm} \mbox{}\protect\newline 0.1 &
  0.7\ensuremath{\pm} \mbox{}\protect\newline 0.1 &
  0.8\ensuremath{\pm} \mbox{}\protect\newline 0.1 &
  0.82\ensuremath{\pm} \mbox{}\protect\newline 0.03\# &
  0.823\ensuremath{\pm} \mbox{}\protect\newline 0.021\#\\
Direct Serum Biirubin(mg/dL) &
  0.19\ensuremath{\pm} \mbox{}\protect\newline 0.01 &
  1.19\ensuremath{\pm} \mbox{}\protect\newline 0.01* &
  0.167\ensuremath{\pm} \mbox{}\protect\newline 0.015 &
  0.233\ensuremath{\pm} \mbox{}\protect\newline 0.015 &
  0.163\ensuremath{\pm} \mbox{}\protect\newline 0.025 &
  0.207\ensuremath{\pm} \mbox{}\protect\newline 0.015 &
  0.173\ensuremath{\pm} \mbox{}\protect\newline 0.015 &
  0.203\ensuremath{\pm} \mbox{}\protect\newline 0.021 &
  0.217\ensuremath{\pm} \mbox{}\protect\newline 0.015\# &
  0.22\ensuremath{\pm} \mbox{}\protect\newline 0.03\#\\
Indirect Serum Bilirubin(mg/dL) &
  0.397\ensuremath{\pm} \mbox{}\protect\newline 0.045 &
  1.12\ensuremath{\pm} \mbox{}\protect\newline 0.01* &
  0.46\ensuremath{\pm} \mbox{}\protect\newline 0.031 &
  0.38\ensuremath{\pm} \mbox{}\protect\newline 0.046 &
  0.44\ensuremath{\pm} \mbox{}\protect\newline 0.021 &
  0.33\ensuremath{\pm} \mbox{}\protect\newline 0.046 &
  0.35\ensuremath{\pm} \mbox{}\protect\newline 0.05 &
  0.53\ensuremath{\pm} \mbox{}\protect\newline 0.03 &
  1.217\ensuremath{\pm} \mbox{}\protect\newline 0.012\# &
  1.22\ensuremath{\pm} \mbox{}\protect\newline 0.03\#\\
Serum Urea(mg/dL) &
  24.24\ensuremath{\pm} \mbox{}\protect\newline 4.24 &
  6.33\ensuremath{\pm} \mbox{}\protect\newline 1.528* &
  21.96\ensuremath{\pm} \mbox{}\protect\newline 7.57 &
  26.12\ensuremath{\pm} \mbox{}\protect\newline 7.54 &
  19.04\ensuremath{\pm} \mbox{}\protect\newline 5.63 &
  32.40\ensuremath{\pm} \mbox{}\protect\newline 1.005 &
  23.81\ensuremath{\pm} \mbox{}\protect\newline 1.065 &
  27.69\ensuremath{\pm} \mbox{}\protect\newline 3.175 &
  23.52\ensuremath{\pm} \mbox{}\protect\newline 0.282\# &
  23.85\ensuremath{\pm} \mbox{}\protect\newline 0.187\#\\
Serum Creatinine(mg/dL) &
  0.62\ensuremath{\pm} \mbox{}\protect\newline 0.047 &
  0.17\ensuremath{\pm} \mbox{}\protect\newline 0.01* &
  0.58\ensuremath{\pm} \mbox{}\protect\newline 0.05 &
  0.61\ensuremath{\pm} \mbox{}\protect\newline 0.059 &
  0.697\ensuremath{\pm} \mbox{}\protect\newline 0.025 &
  0.56\ensuremath{\pm} \mbox{}\protect\newline 0.026 &
  0.6\ensuremath{\pm} \mbox{}\protect\newline 0.05 &
  0.57\ensuremath{\pm} \mbox{}\protect\newline 0.044 &
  0.587\ensuremath{\pm} \mbox{}\protect\newline 0.035\# &
  0.583\ensuremath{\pm} \mbox{}\protect\newline 0.015\#\\
Serum Potassium(mg/dL) &
  4.13\ensuremath{\pm} \mbox{}\protect\newline 0.321 &
  0.573\ensuremath{\pm} \mbox{}\protect\newline 0.087* &
  3.967\ensuremath{\pm} \mbox{}\protect\newline 0.208 &
  4.397\ensuremath{\pm} \mbox{}\protect\newline 0.332 &
  3.923\ensuremath{\pm} \mbox{}\protect\newline 0.892 &
  4.397\ensuremath{\pm} \mbox{}\protect\newline 0.52 &
  4.06\ensuremath{\pm} \mbox{}\protect\newline 0.036 &
  3.797\ensuremath{\pm} \mbox{}\protect\newline 0.168 &
  3.677\ensuremath{\pm} \mbox{}\protect\newline 0.05\# &
  3.683\ensuremath{\pm} \mbox{}\protect\newline 0.02\#\\
Blood Urea Nitrogen &
  12.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  4.67\ensuremath{\pm} \mbox{}\protect\newline 2.082* &
  13.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  14.00\ensuremath{\pm} \mbox{}\protect\newline 2.00 &
  9.67\ensuremath{\pm} \mbox{}\protect\newline 2.082 &
  11.33\ensuremath{\pm} \mbox{}\protect\newline 1.528 &
  14.67\ensuremath{\pm} \mbox{}\protect\newline 2.517 &
  12.33\ensuremath{\pm} \mbox{}\protect\newline 1.528 &
  12.8\ensuremath{\pm} \mbox{}\protect\newline 0.31\# &
  12.74\ensuremath{\pm} \mbox{}\protect\newline 0.571\#\\
\tblbottomrule 
\end{tabulary}\par 
\begin{tablenotes}\footnotesize 
    
\item{Allvalues are expressed as Mean \ensuremath{\pm}SD (n=3). The values were found to besignificantly different at *p{\textless}0.05 when compared with normal control. Thevalues of recovery group were compared with recovery control and the differencefound to be non significant at \ensuremath{^{\#}}p{\textless}0.05}
\end{tablenotes}
\end{threeparttable}

\end{table*}

\begin{table*}[!htbp]
\caption{\boldmath {Relative Organ Weights} }
\label{tw-dbb3d39403ad}
\centering 
\begin{threeparttable}

\def\arraystretch{1.1}
\ignorespaces 
\centering 
\begin{tabulary}{\linewidth}{LLLLLLLLLLL}
\tbltoprule \rowcolor{kwdboxcolor}Organ & Normal control & C5 & C6 & C7 & C8 & C9 & C10 & C11 & \#Recovery \mbox{}\protect\newline Control & \#Recovery \mbox{}\protect\newline Group\\
\tblmidrule 
Average body weight (g) &
  19.47 &
  21.91 &
  20.94 &
  22.2 &
  21.19 &
  20.5 &
  22.51 &
  22.4 &
  21.56 &
  20.72\\
Brain &
  10.505\ensuremath{\pm} \mbox{}\protect\newline 0.049 &
  5.567\ensuremath{\pm} \mbox{}\protect\newline 0.823* &
  9.884\ensuremath{\pm} \mbox{}\protect\newline 0.699 &
  9.783\ensuremath{\pm} \mbox{}\protect\newline 0.854 &
  10.751\ensuremath{\pm} \mbox{}\protect\newline 1.813 &
  10.287\ensuremath{\pm} \mbox{}\protect\newline 0.942 &
  10.868\ensuremath{\pm} \mbox{}\protect\newline 1.154 &
  10.361\ensuremath{\pm} \mbox{}\protect\newline 1.259 &
  9.656\ensuremath{\pm} \mbox{}\protect\newline 1.041 &
  9.783\ensuremath{\pm} \mbox{}\protect\newline 0.854\\
Heart &
  2.876\ensuremath{\pm} \mbox{}\protect\newline 0.051 &
  4.959\ensuremath{\pm} \mbox{}\protect\newline 0.65* &
  2.577\ensuremath{\pm} \mbox{}\protect\newline 0.356 &
  2.163\ensuremath{\pm} \mbox{}\protect\newline 0.328 &
  2.56\ensuremath{\pm} \mbox{}\protect\newline 0.121 &
  2.637\ensuremath{\pm} \mbox{}\protect\newline 0.16 &
  2.366\ensuremath{\pm} \mbox{}\protect\newline 0.409 &
  1.994\ensuremath{\pm} \mbox{}\protect\newline 0.433 &
  2.436\ensuremath{\pm} \mbox{}\protect\newline 0.35 &
  2.163\ensuremath{\pm} \mbox{}\protect\newline 0.328\\
Lungs &
  6.009\ensuremath{\pm} \mbox{}\protect\newline 0.05 &
  9.217\ensuremath{\pm} \mbox{}\protect\newline 0.33 &
  5.476\ensuremath{\pm} \mbox{}\protect\newline 0.2 &
  5.374\ensuremath{\pm} \mbox{}\protect\newline 0.075 &
  5.071\ensuremath{\pm} \mbox{}\protect\newline 0.406 &
  5.629\ensuremath{\pm} \mbox{}\protect\newline 0.204 &
  4.93\ensuremath{\pm} \mbox{}\protect\newline 0.226 &
  4.939\ensuremath{\pm} \mbox{}\protect\newline 0.171 &
  5.424\ensuremath{\pm} \mbox{}\protect\newline 0.423 &
  5.374\ensuremath{\pm} \mbox{}\protect\newline 0.075\\
Stomach &
  14.432\ensuremath{\pm} \mbox{}\protect\newline 0.044 &
  7.7\ensuremath{\pm} \mbox{}\protect\newline 2.06*  &
  11.812\ensuremath{\pm} \mbox{}\protect\newline 2.174 &
  12.158\ensuremath{\pm} \mbox{}\protect\newline 0.563 &
  13.272\ensuremath{\pm} \mbox{}\protect\newline 1.412 &
  13.685\ensuremath{\pm} \mbox{}\protect\newline 0.209  &
  12.727\ensuremath{\pm} \mbox{}\protect\newline 0.727  &
  12.274\ensuremath{\pm} \mbox{}\protect\newline 0.371  &
  12.494\ensuremath{\pm} \mbox{}\protect\newline 0.948  &
  12.158\ensuremath{\pm} \mbox{}\protect\newline 0.563 \\
Liver &
  37.819\ensuremath{\pm} \mbox{}\protect\newline 0.138  &
  42.074\ensuremath{\pm} \mbox{}\protect\newline 2.582* &
  34.078\ensuremath{\pm} \mbox{}\protect\newline 1.556 &
  32.503\ensuremath{\pm} \mbox{}\protect\newline 1.001 &
  34.066\ensuremath{\pm} \mbox{}\protect\newline 1.98 &
  36.813\ensuremath{\pm} \mbox{}\protect\newline 1.212 &
  31.355\ensuremath{\pm} \mbox{}\protect\newline 0.553 &
  32.752\ensuremath{\pm} \mbox{}\protect\newline 1.066 &
  34.197\ensuremath{\pm} \mbox{}\protect\newline 2.946 &
  32.503\ensuremath{\pm} \mbox{}\protect\newline 1.001\\
Intestine &
  62.064\ensuremath{\pm} \mbox{}\protect\newline 0.453  &
  47.802\ensuremath{\pm} \mbox{}\protect\newline 1.178* &
  66.355\ensuremath{\pm} \mbox{}\protect\newline 3.843  &
  61.729\ensuremath{\pm} \mbox{}\protect\newline 2.19  &
  64.571\ensuremath{\pm} \mbox{}\protect\newline 7.046  &
  66.148\ensuremath{\pm} \mbox{}\protect\newline 3.526  &
  61.281\ensuremath{\pm} \mbox{}\protect\newline 5.851  &
  60.175\ensuremath{\pm} \mbox{}\protect\newline 2.363  &
  63.865\ensuremath{\pm} \mbox{}\protect\newline 5.592  &
  61.729\ensuremath{\pm} \mbox{}\protect\newline 2.19 \\
Pancreas &
  11.111\ensuremath{\pm} \mbox{}\protect\newline 1.284  &
  23.691\ensuremath{\pm} \mbox{}\protect\newline 2.178*  &
  9.664\ensuremath{\pm} \mbox{}\protect\newline 0.236  &
  9.187\ensuremath{\pm} \mbox{}\protect\newline 0.167  &
  9.515\ensuremath{\pm} \mbox{}\protect\newline 0.479 &
  9.974\ensuremath{\pm} \mbox{}\protect\newline 0.408  &
  9.018\ensuremath{\pm} \mbox{}\protect\newline 0.199  &
  9.242\ensuremath{\pm} \mbox{}\protect\newline 0.36  &
  9.809\ensuremath{\pm} \mbox{}\protect\newline 0.547  &
  9.187\ensuremath{\pm} \mbox{}\protect\newline 0.167 \\
Kidneys &
  7.511\ensuremath{\pm} \mbox{}\protect\newline 0.644  &
  1.851\ensuremath{\pm} \mbox{}\protect\newline 2.344*  &
  8.806\ensuremath{\pm} \mbox{}\protect\newline 0.454 &
  8.436\ensuremath{\pm} \mbox{}\protect\newline 0.134 &
  8.679\ensuremath{\pm} \mbox{}\protect\newline 0.399 &
  8.394\ensuremath{\pm} \mbox{}\protect\newline 0.951 &
  8.101\ensuremath{\pm} \mbox{}\protect\newline 0.71 &
  7.511\ensuremath{\pm} \mbox{}\protect\newline 0.644 &
  8.094\ensuremath{\pm} \mbox{}\protect\newline 0.52 &
  8.436\ensuremath{\pm} \mbox{}\protect\newline 0.134\\
no. of animals &
  3 &
  0 &
  3 &
  3 &
  3 &
  3 &
  3 &
  3 &
  3 &
  3\\
\tblbottomrule 
\end{tabulary}\par 
\begin{tablenotes}\footnotesize 
    
\item{All values are expressed as Mean\ensuremath{\pm}SD (n=3). *The values were found to be significantly different at *p{\textless}0.05when compared with normal control. \ensuremath{^{\# }} The values of recovery groupwere compared with recovery control and results were found to be nonsignificant at *p{\textless}0.05}
\end{tablenotes}
\end{threeparttable}

\end{table*}
\textit{The present study deals with the acute and 28-days subacute oral toxicity studies of the above mentioned polyherbal combination on Swiss Albino mice as }\unskip~\citep{762891:18141502,762891:18141499} \textit{. }In the acute toxicity study, PHC was administered orally in a single dose to the mice (dose combination levels are discussed later in the paper). Mortality, clinical signs, and change in body weight were monitored for 14 days. Salivation, soiled perineal region, and a decrease in body weight were observed in the extract-treated groups. Mortality was encountered in one of the combinations during the study. Therefore, the approximate LD\ensuremath{_{50}} of PHC in mice was found to be at the dose level 2\ensuremath{^{A}}:2\ensuremath{^{B}}:2\ensuremath{^{C }} ( as per OECD guidelines);  A: Tinospora cordifolia;  B: Withania somnifera;  C: Boerrhavia diffusa.  In the subacute toxicity study, PHC was given orally to the mice for 28 days at sub-graduated dose levels between the lethal dose level \& the dose level combination 1\ensuremath{^{A}}:1\ensuremath{^{B}}:2\ensuremath{^{C}}. There was no PHC-related toxic effect in the body weight, food consumption, haematology, and clinical chemistry and organ weights except at the dose level (2\ensuremath{^{A}}:2\ensuremath{^{B}}:2\ensuremath{^{C}}). The toxicity induced mortality in this group was further proven by end-organ toxicity signs observed after the necropsy and in the histopathological examination of different organ tissues \unskip~\citep{762891:18141481}. Toxic effects in the haematology and serum biochemistry, as well as morphological changes, were observed in the gross organ study. Therefore, it was concluded that all dose level combinations were safe, except for combination 2\ensuremath{^{A}}:2\ensuremath{^{B}}:2\ensuremath{^{C}}\unskip~\citep{762891:18141436,762891:18141488}.


\bgroup
\fixFloatSize{images/5673a974-1f73-478d-808c-9ae9aac944d2-upicture-1.png}
\begin{figure*}[!htbp]
\centering \makeatletter\IfFileExists{images/5673a974-1f73-478d-808c-9ae9aac944d2-upicture-1.png}{\includegraphics{images/5673a974-1f73-478d-808c-9ae9aac944d2-upicture-1.png}}{}
\makeatother 
\caption{\boldmath {(a) Stomach; (b) Heart; (c) Lungs; (d) Brain; (e) Intestine; (f) Kidney; (g) Liver; (h) Pancreas}}
\label{f-3e1424981f3a}
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\makeatother 
\caption{\boldmath {(a) Stomach; (b) Heart; (c) Lungs; (d) Brain; (e) Intestine; (f) Kidney; (g) Liver; (h) Pancreas}}
\label{f-a6eea4bde3d7}
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\makeatother 
\caption{\boldmath {(a) Stomach; (b) Heart; (c) Lungs; (d) Brain; (e) Intestine; (f) Kidney; (g) Liver; (h) Pancreas}}
\label{f-511528645d6d}
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\makeatother 
\caption{\boldmath {(a) Stomach; (b) Heart; (c) Lungs; (d) Brain; (e) Intestine; (f) Kidney; (g) Liver; (h) Pancreas}}
\label{f-c4a5abddf0ed}
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\caption{\boldmath {(a) Stomach; (b) Heart; (c) Lungs; (d) Brain; (e) Intestine; (f) Kidney; (g) Liver; (h) Pancreas}}
\label{f-29da1c356021}
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\textbf{Tinospora cordifolia (Guduchi), Withania somnifera (Ashwagandha), and Boerhaavia diffusa  (Punarnava): Herbs of Polyherbal Combination}

The plants selected for the polyherbal combination (PHC) are T.cordifolia (Menispermaceae)  also commonly known as Guduchi or Giloe, W.somnifera  (L) Dunal (Solanaceae), commonly called Ashwagandha, and B.diffusa  (Nyctaginaceae), widely known as Punarnava in traditional herbal literature. T.cordifolia  is widely used in Indian Ayurvedic medicine for treating diabetes mellitus \unskip~\citep{762891:18141484}. It has been reported in various experimental studies conducted on rodents that the daily administration of both alcoholic and aqueous extract of T.cordifolia potentially  controlled the blood glucose level and also enhanced the glucose tolerance\unskip~\citep{762891:18141483,762891:18141505}. Withania somnifera,  a plant from the Solanaceae family, also known as Ashwagandha (Sanskrit), is an Ayurvedic Indian medicinal plant, which has been widely used as an antioxidant, antistress, and antihypertensive herb. The phytoconstituents of this plant with their pharmacological and therapeutic potential have been well reported. Different researches state that W.sommifera  possess neuroprotective, lipid-lowering, anti-Parkinson's, antineoplastic, and other anabolic activities. It has also been proven fruitful in the treatment of arthritis, geriatric mental issues, and stress. It is one of the most commonly used herbs as an antistress and adaptogenic agent. It is also known to increase life span and has antiageing effects. The roots of W.somnifera  contain several alkaloids called withanolides, a few flavonoids, and reducing sugar. The major active compounds of the roots are reported to be withanolides and glycosides \unskip~\citep{762891:18141493,762891:18141494}\textit{. } Another most typical and exemplary plant of the Ayurvedic plethora is Boerhaavia diffusa, belonging to the Nyctaginaceae family. The whole plant, as well as individual parts like roots, stem, and leaves of B.diffusa,  have been extensively used for the treatment of various inflammatory disorders \unskip~\citep{762891:18141437,762891:18141519}  such as gonorrhoea, dyspepsia, edema, jaundice, dysmenorrhoea, anaemia, liver, gall bladder, and kidney disorders, enlargement of spleen, abdominal pain, abdominal tumours, and cancers. It is also documented as a potent diuretic, laxative, and a menstrual promoter in Indian Pharmacopoeia. It is administered orally as a blood purifier and to relieve muscular pain. Based on these medicinal properties and health benefits, the plants were screened for Polyherbal combination \unskip~\citep{762891:18141517,762891:18141497}.
    
\section{Materials and Methods}
\textbf{Collection \& Authentication of Plant Material}

All the plant materials were purchased from local medicinal plant supplier of Lucknow and authenticated by CSIR-National Botanical Research Institute, Lucknow. NBRI invoice number provided: CSIR/NBRI/003/10.

\textbf{Preparation of Plant Extracts}

The roots of Tinospora cordifolia  (500 g) were collected and shade dried to form a powdered mixture. It was subjected to sohxelation process with double distilled water and ethanol combined in the ratio of 1:1 for 36 hours at 40\ensuremath{^{\ensuremath{\circ }}}C. The liquid extract was cooled and dried by evaporating its contents on rota vaporiser. The yield of hydroalcoholic extract was 17.55\% w/w of crude drug power. The extract was stored at a temperature of approximately 1{\textendash}1.5 \ensuremath{^\circ}C \unskip~\citep{762891:18141498}.

The roots  of Withania somnifera were used to prepare the extract. The roots were pulverised using a grinder and then extracted with methanol. The extract was then concentrated on a rotator evaporator to distil methanol and get a thick paste. 250 g of the thick paste of methanolic extract was again extracted with 500 ml of ethyl acetate in Soxhlet extractor for 3 hours at a temperature of 65 \ensuremath{^\circ}C and then concentrated on the rotator evaporator \unskip~\citep{762891:18141480}. 

The collected plant materials of Boerrhavia diffusa  were shade dried and powdered mechanically. 200g of pulverised material was soaked in 100 ml of chloroform and methanol each for 48 hours, following the principle of maceration. It was then filtered.  The solvent was distilled out from the filtrate and dried under reduced pressure in Rota vapour \unskip~\citep{762891:18141514}.

\textbf{Preparation of the Polyherbal Combination}

Once the extract for all the three test materials was prepared, it was dried and suspended in olive oil mixed in the following combinations; 20\% glycerol was used as a suspending agent. The different dose levels of the drugs were mixed in different ratios discussed later under experimental design.

\textbf{Acute Toxicity \& Subacute Toxicity Study}

The present study was conducted at the Departmental Animal House, Faculty of Pharmacy, Integral University as per Good Laboratory Practices and following the protocol of the Organization for Economic Cooperation and Development \unskip~\citep{762891:18141499}.

The study protocols were also reviewed and approved by Institutional Animal Ethical Committee (IAEC), Faculty of Pharmacy, Integral University, and Lucknow. Reg no. 1213/PO/Re/S/08/CPCSEA, 16\ensuremath{^{th}} June 2017; Approval no. IU/IAEC/ 17/04.

\textbf{Treatment with Polyherbal Extract}

The Polyherbal Combination (PHC) was administered using an oral gavage needle. 

In acute toxicity study, prior to dosing, animals fasted overnight for approximately 16 hrs. Drinking water and food were provided ad libitum. The dosing was done once a day for 14 days without fasting \unskip~\citep{762891:18141518}. Similarly, for subacute toxicity studies, the dosing was continued for 28 days with dose levels screened from the outcomes of acute toxicity studies. Two groups were dosed for an extended two week recovery period. The extract dosing volume was kept as 0.5mL/kg/day, and the dose was determined based on measured body weights of animals (as it varied throughout the study) for both acute and subacute toxicity studies \unskip~\citep{762891:18141499}.

\textbf{Experimental Animals}

The Swiss albino mice (4-week old) (18-22gm) used in the acute toxicity studies were retrieved from animal husbandry of Central Drug Research Institute (CDRI), Lucknow. 

During the study period, the animals were housed at a temperature of 22 \ensuremath{\pm} 3 \ensuremath{^\circ}C and relative humidity of 50 \ensuremath{\pm} 20\%, with 12 hr light and dark cycle \unskip~\citep{762891:18141496}. The animals were acclimatized to laboratory conditions for 7 days before beginning activity. 

Groups of three animals were housed in polypropylene cages (260 \ensuremath{\times}350 \ensuremath{\times} 210 mm) during the acclimatization and one animal per cage during the dosing periods. Proper marking and identification codes were assigned to each cage to distinguish from others. Animals were given standard pellet diet and drinking water ad libitum  throughout the study period \unskip~\citep{762891:18141521}.

\textbf{Experimental Design}

Female Swiss mice (4-week old) (18-22gm) were divided into 6 groups of 3 animals each. The 1st group served as a Normal control and received 20\% glycerol. At the same time, 2nd, 3rd, 4th, 5th, and 6th were considered as toxic groups received orally different dose ratios of polyherbal combination (dissolved in 20\% glycerol) for individual herbs \unskip~\citep{762891:18141495,762891:18141482}. The dose combinations given were as follows\textit{}

All animals were observed for clinical symptoms like convulsion, tremor, constipation or diarrhoea, and changes in eye and skin colours, if observed.  Behavioral activities such as changes in body weight, food intake and water intake, and rate of respiration were also closely monitored at the interval of 30, 60, 120, 240, and 360 min after the first dose and twice a day after that for the 14-day experimental activity \unskip~\citep{762891:18141518,762891:18141491}. The body weights were recorded before dosing as well as on days 1, 3, 7, and 14 after dosing \unskip~\citep{762891:18141500}. The detailed results have been illustrated in Table~\ref{tw-1c0133b4e36a}.

The results of the acute toxicity studies showed that all the combinations of the three plant extracts were safe except the C5 combination (2\ensuremath{^{A}}:2\ensuremath{^{B}}:2\ensuremath{^{C}}); (Table~\ref{tw-1c0133b4e36a} ). Upon administration of the plant extracts in the C5 ratio, certain physiological symptoms of toxicity such as sticky stool, increased rate of respiration, drowsiness, lethargy, increased paw licking, reduced food consumption, and mortality were observed. However, subacute toxicity studies were conducted to confirm that the death resulted from combination induced toxicity and to countercheck the other combinations as well.\textit{}

The dose levels were screened from the outcomes of acute toxicity study. The low dose level was set at the combination of 1\ensuremath{^{A}}:1\ensuremath{^{B}}:2\ensuremath{^{C}} at which no mortality was observed, and the high dose level was set at the combination of 2\ensuremath{^{A}}:2\ensuremath{^{B}}:2\ensuremath{^{C}}, at which mortality was observed in acute toxicity study. The doses in between were set at different ratio combinations (increasing by 1/3 \ensuremath{^{rd}} ratio of initial dose) ranging between the two selected dose levels from Table~\ref{tw-9f68bc11c5b8}. Control animals were administered with vehicle only (20\% glycerol). 24 animals of either sex mice (6-week-old) per group were administered PHC at dose combinations mentioned in Table~\ref{tw-9f68bc11c5b8}. Additionally, three animals each were added to the control and high dose groups for the recovery study. The purpose of repeating the C5 combination subacute toxicity studies was to assure that mortality observed was due to dose-related toxicity and not due to any other reason like choking, lack of drinking water etc. The following Table~\ref{tw-2f89bd3f4162}  illustrates the graded dose level combinations selected for subacute toxicity studies.

\textbf{Test Parameters}

The animals were thoroughly observed once in a day for clinical signs of any toxicity and twice a day for mortality for the entire study period. The animals in the graded dose groups were observed for two weeks, and those of the recovery groups were observed for extended two weeks without any dosing during the extended period to study any late signs of toxicity. Before dosing on day 1, body weights were recorded. Similarly, body weights were measured once in a week and during the dosing and recovery period and analysed statistically, excluding body weights measured on the day of necropsy to avoid discrepancy in data, since all animals were fasted for 24hrs before sacrificing. The food consumption was measured daily from the day of group assignment to the last day of dosing. During the dosing and recovery periods of subacute toxicity study, the average of daily food consumption was calculated from the total amount consumed in 7 days.

On the 28\ensuremath{^{th}} day of study, necropsy was performed on all animals (except the recovery group), but only after ensuring that all animals were fasted overnight for approximately 18 hrs. The animals were anaesthetized with thiopental sodium, and blood was collected through retro-orbital plexus and tail vein in two tubes: one with EDTA for immediate analysis of haematological parameters and biochemical estimations, the other without any additives was centrifuged at 4,000 rpm at a temperature of 4 \ensuremath{^\circ}C for 10 min. Plasma and serum were stored at -18 \ensuremath{^\circ}C until analyzed for biochemical parameters. The following haematological parameters were evaluated: Erythrocyte (RBC) count, haemoglobin (Hb), hematocrit (HCT), thrombocyte count, leucocyte (WBC) count, differential leucocytes (DLC) count, and Random blood glucose level (RBG) \unskip~\citep{762891:18141513,762891:18141491}.  The remaining blood samples collected for the haematological examination was centrifuged at 3,000 rpm for 10 min to obtain the serum \unskip~\citep{762891:18141503,762891:18141504}. The following parameters were then analyzed in serum: Alanine Transaminase/SGPT, Aspartate transaminase/SGOT, Serum Alkaline Phosphatase (SAP) \unskip~\citep{762891:18141507}, total bilirubin \unskip~\citep{762891:18141492,762891:18141501}, blood glucose, total cholesterol, triglyceride, total protein, albumin, blood urea nitrogen, and creatinine \unskip~\citep{762891:18141516}. The electrolytes concentration, including Na+, K+  and Cl\ensuremath{-}  ions, were also estimated \unskip~\citep{762891:18141486}. All the results of haematological as well as serum biochemistry assessments are given in Tables~\ref{tw-98369234220e}, \ref{tw-932535cb1dbe} and~\ref{tw-dbb3d39403ad}.

On the 28\ensuremath{^{th}} day,  after collecting blood samples, the animals were weighed, anaesthetised with thiopental sodium, and sacrificed after the brain, lungs, heart, stomach, intestine liver, spleen, and kidney were dissected out washed with ice-cold saline and weighed. Complete cross-examinations of the outer and inner surfaces of vital visceral organs were performed on all animals on the day of necropsy, and all grossly visible signs of toxicity were recorded. The following organs were weighed (weight of the paired organs was recorded together): brain, heart, lungs, pancreas, liver, stomach, intestine, and kidneys. The organ weights were expressed as relative organ weights with respect to animal body weight. \unskip~\citep{762891:18141508,762891:18141520}.

The organs were then blotted with filter paper and mounted in organ container bottles filled with 10\% formalin for histopathological examinations. 10\% tissue homogenates of liver were prepared by homogenising a weighed amount of tissues in 0.1M trisaminomethane-HCl buffer (pH: 7.4). The homogenates were then sent for histopathological estimations to Alpine Diagnostics, Kapoorthala, Lucknow. The investigations on all the tissues of isolated organs from the animals of the normal control and treated groups were carried out post-treatment with paraffin, and staining with hematoxylin and eosin (H\&E) stain for microscopic evaluation at 40x resolution \unskip~\citep{762891:18141509,762891:18141506}. The images of histopathology are shown in Figures~\ref{f-3e1424981f3a}, \ref{f-a6eea4bde3d7}, \ref{f-511528645d6d}, \ref{f-c4a5abddf0ed} and~\ref{f-29da1c356021}.

\textbf{Statistical Analysis }

The statistical analyses were performed using the statistical analysis software graph pad prism 6.0 for data, including body weight change, food consumption ratio, haematological parameters, serum biochemistry, and relative organ weight. The results were reported as means \ensuremath{\pm} standard deviation. Nonparametric paired t-test was performed to test the homogeneity of variance (*p{\textless}0.05); Student t-test was conducted (two-tailed) on each data sets of the individual quantitative parameter.
    
\section{Results and Discussion}
During the acute toxicity study period, one male rat died on day 2 in the (2:2:2; Toxic group) C5-treated group. The other dose level groups showed no toxicological signs or symptoms. Therefore, we concluded that all the dose level treated groups except C5-treated group had no toxicological outcomes. The food consumption results reflected that mice treated with all the combinations at weeks 2 and 3, consumed lower amounts of feed than the control group, temporarily, which improved later on. However, in the case of C5-treated group where the food consumption by animals was considerably reduced before mortality. The change in body weight pattern in both study groups and recovery groups were comparable to normal control with no significant difference from the normal control, except in the case of C5-treated group where a marked decrease in body weight was observed, and the results were significantly different from normal control at *p{\textless}0.05. The graphical analysis of the relative organ weight justifies the toxicity observed in C5-treated group. There was a marked reduction observed in the organ weights of brain, stomach, intestine, and kidneys due to necrosis when compared to their respective normal control. Similarly, there was toxicity related hypertrophy and increased organ weight observed in the heart, lungs, liver, and pancreas (found to be significantly different at *p{\textless}0.05 with normal control). The relative organ weights of the other combination-treated groups and recovery groups were comparable to their respective control groups and significantly not different from the normal control. The results of biochemical estimations of various enzymatic parameters in all the ratios of PHC groups and recovery groups showed results within a normal range compared to the normal control and significantly not different from the normal control group except for C5-treated group that showed prominent signs of toxicity in various enzymatic levels. In the liver function test profile, it was observed that serum levels of SGOT, SGPT, total bilirubin, and direct and indirect serum bilirubin were found to be significantly different at *p{\textless}0.05. All the LFT parameters were found to be elevated when compared to normal control. Similarly, the kidney function test profile showed reduced levels of serum creatinine, serum urea, and blood urea nitrogen when compared with normal control at *p{\textless}0.05 in the C5-treated group. The pattern of other parameters such as AST, ALT, blood glucose, total cholesterol, and triglycerides was found to be elevated significantly than normal control at *p{\textless}0.05 in C5-treated group. The revelations from the haematological profile of all the combinations-treated group indicated that only the C5-treated group had toxic effects on blood-related parameters that differed significantly from normal control at *p{\textless}0.05 and all the other combinations showed results comparable to normal control. As evident in the Differential Leukocyte Count Profile, all the cellular values (Monocytes, Lymphocytes, Basophils, Neutrophils, and Eosinophils) were found to be reduced when compared to normal control. The recovery group showed results comparable to its control group with no significant difference. The histopathological examination of various organs from the normal control group, C5-treated group, and recovery group showed normal architecture, suggesting no detrimental changes and morphological disturbances caused by the administration of polyherbal extract in the above combinations, except for the C5-treated group. In the C5-treated group, the  following toxic signs were observed \unskip~\citep{762891:18141487}. The results of the end-organ study and gross morphology revealed discoloration in the lung, specifically observed in the left lobe and right caudal lobe. In addition, inflammation of the left lobe and congestion of the right caudal lobe were discovered in the histopathological examination.  The heart was reported to show early myocardial ischaemia, necrosis with loss of cross striations, oedema, haemorrhage, and early neutrophilic infiltrate. The kidneys showed coagulative necrosis specifically congestion around collecting tubules; the histopathological reports stated tubular necrosis. The H\&E stained section of intestine showed marked villous necrosis. The epithelial lining of villi was completely shed off, and there was marked oedema with fibrinopurulent exudates that extended up to muscularis mucosae, acute ischaemic colitis was concluded. The H\&E stained section of the stomach showed mucosal coagulative necrosis with superficial erosion and fibrinopurulent exudates there was also mild transmural infiltration by acute inflammatory cells, coagulative necrosis, and gastritis concluded. The liver showed centrilobular necrosis. The H\&E stained section showed inflammation with greyish white exudates. The H\&E stained section showed focal centrolobular necrosis. There was a cluster of hepatocytes showing coagulative necrosis along with mild but acute infiltration, centrolobular necrosis of liver concluded. The H\&E stained section showed mild acute inflammation and spongiosis.
    
\section{Conclusions}
The acute and subacute toxicity studies revealed interesting and noteworthy facts about the safety profile of the polyherbal combination constituted from the extracts of T.cordifolia, W.somnifera,  and B.diffusa. It was concluded from this study that different dose combination ratios of these medicinal plants are safe at most dose levels except when combined at twice ED\ensuremath{_{50\ }} of each plant, i.e. at C5 combination, that showed prominent toxicity in the animals as proven in serum biochemistry, haematology, relative organ weights, change in body weights, and histopathological findings. The results of parameters in all other dose combinations were comparable to the normal control at *p{\textless}0.05. The use of C11 combination was repeated in the recovery group as it was the highest level of safe dose combination. All the profiles, LFT, KFT, serum biochemistry, DLC, relative organ weights, and change in body weight were comparable to the recovery control with no significant difference in the data at *p{\textless}0.05. Hence, the acute and subacute toxicity screening advocates that the given polyherbal combination of the extracts of T.cordifolia, W.somnifera,  and B.diffusa  based in olive oil is a highly salubrious combination and it can be investigated further for its antidiabetic, cardioprotective, and neuroprotective potentials. The LD50 reported for each of these plants in different literatures reflect that T.cordifolia  and B.diffusa  (LD50{\textgreater}2000 mg/Kg) are highly safe. The plant that remains in question is W.somnifera. The toxicity observed in C5 combination of PHC may be attributed to the low LD50 of W.somnifera (LD50 = 1750 mg/Kg) and interaction between different phytoconstituents at high dose levels (2\ensuremath{^{A}}:2\ensuremath{^{B}}:2\ensuremath{^{C}}). This study serves as a stepping stone to develop a novel formulation in future to cope with the two most common complications of diabetes: cardiomyopathy and neuropathy.
\section*{Acknowledgements}The authors are highly thankful to the Prof. S.W.  Akhtar, Hon'ble Chancellor Integral University and Prof. Syed Misbahul Hasan, Dean Faculty of Pharmacy, Integral University, Lucknow, India for providing with an academically rich environment and scientific facilities for the research in the university's infrastructure to explore and study extensively into clinically relevant fields. The Manuscript Communication Number provided by the University for this Paper is IU/R\&D/2019-MCN000613.

\textbf{Conflict Of Interest}

The authors declare that they have no conflict of interest.

\textbf{Funding Support}

None.
    

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