From the Manufacturer:
Damiana [Glandular] is an aromatic shrub that grows abundantly in dry, rocky soils. It is believed to have mildly stimulating qualities. Damiana supports glandular health and is traditionally sought to support sexual health. The Aztecs used it as an aphrodisiac. Damiana also contains alkaloids, flavonoids, cyanogenic glycosides, tannins and resins, which add to its healthful benefits. Each capsule contains 350 mg damiana.