Libido extreme dark blue can have a positive influence on hormone balance. it can also stimulate blood flow to the sexual organs.in this way the feeling of pleasure can be enhanced and it can be possible to maintain a hard erection for a long time. even after an orgasm, the erection can continue. the effect of libido extreme dark blue can persist for a long time.suggested use:1 dose consists of 1 capsule (350 mg) and must be taken at least 1 hour before sexual activity. do not take more than 2 capsules per 24 hours.ingredients per capsule:muira puama extract 200mg, maca dry extract 50mg, zinc 41mg (50% rda) tribulus terrestris 30mg, radix ginseng 21mg, other ingredients: gelatine capsule