Acute and Chronic Toxicity of an Aqueous Fraction of the Stem Bark ofStryphnodendron adstringens(Barbatimão) in Rodents

Abstract

Stryphnodendron adstringenshas a high tannin content and is used as an antiseptic and antimicrobial and in the treatment of leucorrhea, gonorrhea, wound healing, and gastritis. The present study evaluated the toxic effects of the heptamer prodelphinidin (F2) from the stem bark ofS. adstringensin rodents. In the acute toxicity test, the mice that received oral doses exhibited reversible effects, with an LD50of 3.015 mg·kg−1. In the chronic toxicity test at 90 days, Wistar rats were treated with different doses of F2 (10, 100, and 200 mg·kg−1). In the biochemical, hematological, and histopathological examinations and open-field test, the different dose groups did not exhibit significant differences compared with controls. The present results indicate that F2 from the stem bark ofS. adstringenscaused no toxicity with acute and chronic oral treatment in rodents at the doses administered.