Maca is the root of a Peruvian plant Lepidium meyenii (Brassicaceae), growing in the Central Andean Region of Peru between 4000 and 4500 meters of altitude, mainly in Junin and Cerro de Pasco. This species is described in the catalogue of the flowering plants and gymnosperms of Peru. Maca have been traditionally employed, among others, to improve sexuality and fertility. Oral administration of Maca significantly improved the sexual behaviour in male rats and mice. More recently, it has been demonstrated that Maca improves spermatogenesis in male rats. Dry maca hypocotyls have the following composition: 59% carbohydrates, 10.2% proteins, 8.5% fibre and 2.2% lipids among a few other compounds (Dini et al. 1994) (Read more)