In folk medicine, damiana herb is considered as an aphrodisiac. When given to sexually exhausted rats the herb significantly reduced the post-ejaculatory interval. The researchers write, Our results support the use of damiana as an aphrodisiac in traditional medicine and suggest possible therapeutic properties of this herb on sexual dysfunction."
My comments: Although damiana may help with sexual dysfunction, I find other herbs to be more potent including catuaba, horny goat weed, muira puama, tribulus, mucuna pruriens, tongkat ali, maca, and yohimbe. Formulas that include a balance of several aphrodisiac herbs seem to work the best. The aphrodisiac product that has the highest rate of reorder is Passion Rx with Yohimbe. See http://www.raysahelian.com/damiana.html