The methanolic extract of fruit of
Benincasa hispida
(BHFE) was evaluated for its antidiarrheal potential against several experimental models of diarrhea in rats. BHFE treated animals showed significant inhibitory activity against castor oil induced diarrhea and inhibited PGE
2 induced enter pooling in rats. It also showed significant reduction in gastro intestinal motility following charcoal meal in rats. The result obtained and establishes the efficacy of BHFE as an antidiarrheal agent.