Introduction: Sacoglottis gabonensis (Baille) Urban (Humiriaceae) is a medicinal plant used in the treatment of Buruli ulcer in Ivory Coast. To ensure its effect over a long period of use, the subchronic toxicity of the total aqueous extract of S. gabonensis stem bark (ETASg) in rats was evaluated. Methods: 80 rats were homogeneously distributed in 4 lots of 20 rats each, including 10 males and 10 females. ETASg was administered daily orally for 90 days for 2 mL/100 g body weight (b.w.) rats at doses of 3.5; 35 and 350 mg/kg b.w. The control group received distilled water. A venous blood sample is taken every 30 days for 90 days to determine serum biochemical parameters.

Sacoglottis gabonensis is a medicinal plant used traditionally for the treatment of Buruli ulcer in Côte d’Ivoire. To ensure its effect over a long period of use, assessment of the total aqueous stem bark extract of S. gabonensis (ETASg) on anatomo-histology of Wistar rat liver, kidneys and heart was evaluated. ETASg was administered to Wistar rats at doses of 3.5; 35 and 350 mg/kg/day for 90 days. The liver of rats treated with ETASg at 35 and 350 mg/kg showed color and appearance changes with whitish nodules. Furthermore, histological architecture revealed micro-vesicular steatosis. In contrast, gross examination did not showed any change color and appearance of the kidneys and heart of the rats tested at all doses of ETASg compared to those of control rats. Histological sections of the kidneys and heart of rats tested at all doses of ETASg showed normal kidney and heart cells. After stopping the administration, the liver abnormalities disappeared at the end of the 120 days. This study revealed that the integrity of the liver tissue is preserved only with ETASg of 3.5 mg/kg. On the other hand, it is guaranteed at all the doses studied for the renal and cardiac tissues.