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In most parts of West Africa and other developing countries, herbal medicines are sometimes used by patients concomitantly receiving conventional drugs, which can result in potentially serious adverse effects. This study examined in vivo cytotoxic effects of Azadirachta indica extracts followed by artesunate administration on some markers of liver and kidney toxicity. Serum ALT, GGT, urea, creatinine, interleukin 1β, tumor necrosis factor α, tissue malondialdehyde and glutathione levels and liver and kidney histology in healthy male Wistar rats administered 100 and 200 mg/kg A. indica for 5 days followed by 10 mg/kg Artesunate for 5 days was determined. Results showed significantly ( p &lt; 0.05) higher serum ALT, GGT, urea, creatinine, interleukin 1β and tumor necrosis factor α levels with proportional increase of 16.5, 21.7, 9.2, 6.9, 9.1 and 9.1% respectively when compared to normal control was observed. Malondialdehyde levels were significantly ( p &lt; 0.05) higher with a proportional increase of 57.8%, while glutathione levels were significantly ( p &lt; 0.05) lower with a proportional decrease of 13.4% in liver homogenates of the treated rats relative to normal control. Histological examination of the liver and kidney of the co-treated rats showed vascular congestion and necrosis. Collectively, the results suggest that administration of A. indica followed by artesunate could predispose to liver and kidney associated cytotoxicity. These findings could have implications for people who habitually use herbal preparations and conventional drugs in sequential fashion.

toxicology research and application

Toxicological implications of sequential administration of herbal and conventional medicines: Evidence from an in vivo study on Azadirachta indica and artesunate in male Wistar rats