Is it good for high blood pressure? cayenne

Can't count on it: There are thousands of supplements and services advertised to do all sorts of magical remedies. Very few supplements have real research studies to show medically consistent benefits (but manufacturers make claims, based on theories, animal tests, testimonials, chemical similarities, etc... but not based on real research).

Cayenne HBP: No evidence it makes patients with high blood pressure live longer. There is VERY good evidence that proper diagnosis of the cause and good control with medications will help you live longer and suffer less from high blood pressure complications: stroke, MI, heart and kidney failure. You can download the National Guidelines. Look for JCC 8. 1st recommendation is DASH Diet. Discuss with team.