Comparison of the effects of captopril and enalapril on oxyphenbutazone and ethanol-induced gastric lesions in rats.

We have compared the effect of the converting enzyme inhibitors, captopril and enalapril, on two models of gastric ulcers, viz; ethanol and oxyphenbutazone-induced lesions in rats. Both captopril and enalapril did not affect ethanol-induced lesions. While captopril significantly protected against oxyphenbutazone-induced lesions, enalapril aggravated the lesions. This difference is probably due to the lack of the protective sulfhydryl group in the chemical structure of enalapril.