BOTANICAL Name: Turnera diffusa
Damiana is a wild shrub that grows in Mexico, Central America, and the West Indies. The leaf and stem are used to make medicine. Historically, it was used mostly to increase sexual desire (as an aphrodisiac). Damiana is used to treat headache, bedwetting, depression, nervous stomach, and constipation; for prevention and treatment of sexual problems; boosting and maintaining mental and physical stamina; and as an aphrodisiac. Some people inhale damiana for a slight "high."