Cayenne is one of the chili peppers and has been used therapeutically for thousands of years. Cayenne pepper belongs to the genus Capsicum. It was first grown in Central and South America thousands of years ago and now grows naturally in subtropical and tropical climates.
The medicinal properties are derived from the chemical capsaicin (kap-sey–uh-sin), which is the ingredient that gives chili peppers their heat. The more capsaicin present, the hotter the pepper is. Cayenne peppers contain vitamins E, A, C, K, B complex, calcium, manganese, and potassium plus carotenoids which are plant pigments that are powerful antioxidants.