Abstract: The current study reports the toxicological studies of the crude aqueous leaf extract using albino rat models. The in vivo effects of acute and sub-chronic doses of the extract on liver function and kidney function parameters were studied. The results indicated that the LD50 of the extract is > 3000 mg kg-1 body weight. There were no significant differences (p>0.05) in weight changes of the animals on different doses of the extract during both the acute and sub-chronic toxicity tests. The biochemical parameters of the animals on different doses of the extract were not significantly (p>0.05) different, except the ALT and AST that, in non-dose dependence, showed significant differences (p<0.05) in both test models. Serum globulin level of the animals on different doses during the sub-chronic test was also significantly different (p<0.05). These results indicated that the crude extract of A. chevalieri may be relatively safe for human consumption.