Maca Root has been found to have low toxicity, meaning it is a generally safe herb that has not been found to cause any negative side effects or adverse reactions.
Maca helps balance stress levels and bolster resiliency in the body. Boosts energy & endurance. This potent adaptogen may increase stamina and endurance with a good diet and regular exercise. 
Function: 
-It has the functions of tonifying the kidney, strengthening the spleen, improving the nocturnal emission, preventing premature ejaculation and sexual fatigue.
-Improve the quality of sexual life, Stimulate energy, relieve fatigue
-Reuse may greatly increase your breast, buttock, hips and or Penis  size for men and women! 
When taken regularly, Maca supports an increase in libido, sexual desire, sexual performance, and erectile function. Maca may improve endurance and any physical performance.
Maca is prized as a nutritious food rich in fiber, amino acids, and essential fatty acids. Nutricost Maca Root delivers 750mg in each capsule. The nutritional value of Maca Root is high, and contains the essential trace elements iron, iodine, copper, manganese, and zinc, as well as fatty acids including linolenic acid, palmitic acid, and oleic acids, and 19 amino acids.