Damiana (Turnera diffusa) has been used in folk medicine for centuries in order to treat ailments such as 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. Its name comes from the Nahuatl word totoniom which means little demon or little devil because of its reputation as an aphrodisiac.