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Objective: To evaluate the antimicrobial and toxicological effects of aqueous garlic (Allium sativum) bulbs extract in wister rat using biochemical and hematological parameters. Methods: A total of 20 wister rats were assigned into four (A–D) groups of five animals each. Group A served as the control and was administered 1 mL of distilled water. Groups B–C were given 300, 600 and 1200 mg/kg body weight of garlic (Allium sativum) bulbs extract for 5 weeks. Results: Garlic bulbs extract produced significant inhibitory activities against all bacteria tested at concentrations of 120 and 160 mg/mL. However, at concentration of 80 mg/mL, the extract had no inhibitory activities against Klebsiella pneumoniae and Salmonella typhi. The minimal inhibitory concentration and minimal bactericidal concentration ranged between 80–120 mg/mL and 120–160 mg/mL respectively. Toxicological study revealed that the extract did not cause any significant (P > 0.05) alteration to serum aspartate transaminase, alkaline phosphatase activities, total bilirubins, Na, K, creatinine, red blood cell, hematocrit, hemoglobin, mean corpuscular hemoglobin concentration, granulocyte and organs-body weight ratio. However, serum alanine transaminase activities, total proteins, direct bilirubins, Cl− concentrations and body weight gain were significantly (P |
