capsin and Enalaprilat Interactions

Interactions between capsin(capsaicin topical) and Enalaprilat (enalapril)

enalapril and capsaicin topical (Minor Drug-Drug)

Concomitant use of an ACE inhibitor and topical capsaicin may potentiate the cough associated with each of these agents individually. In 16 healthy volunteers, pretreatment with oral captopril (25 mg) two hours before inhalation of nebulized incremental doses of capsaicin (0.5 to 20 micromol/L in normal saline) resulted in a significant shift of the dose-response curve to capsaicin compared to pretreatment with placebo. The geometric mean dose of capsaicin causing 20 coughs per minute was 1.3 micromol/L for captopril and 2.8 micromol/L for placebo. In a case report, a 53-year-old woman who had been treated with an ACE inhibitor for several years complained of cough each time she applied a 0.075% capsaicin cream to her lower extremities. The patient had not experienced a cough during treatment with the ACE inhibitor alone. However, capsaicin alone may also induce coughing.