How long men take maca effective, with the patient’s specific condition, absorption capacity and other related, not a generalization. Maca is a natural food produced in South America, the human body has a tonic and strong effect, can improve the body’s immunity to a certain extent. The alkaloids contained in Maca can stimulate the reproductive system, increase the number of sperm, improve the vitality of sperm, has a certain role in improving sexual function and fertility, can be used to assist in the treatment of impotence, premature ejaculation. If the patient’s condition is mild and absorption is good, generally consuming maca for about 2 weeks may have some effect. If the patient is sicker and poorly absorbed, it usually takes 1 month or more of consumption to have an effect. It is recommended that men who have premature ejaculation, impotence and other sexual dysfunction, promptly go to the regular hospital urology or male department to receive regular treatment.