Viagra generally refers to sildenafil, the first time to take and can not treat premature ejaculation Sildenafil is a kind of drug for treating male erectile dysfunction, belonging to a kind of phosphodiesterase V inhibitor, and does not have the efficacy of treating premature ejaculation. Premature ejaculation is usually referred to in the course of sexual life time is less than two minutes, is generally due to the nerve is too sensitive, can consider following the doctor’s advice to use dapoxetine, paroxetine, sertraline hydrochloride and other drugs for treatment, at the same time in the sexual life during the should maintain a smooth mind, do not overly nervous. Whether it is sildenafil or the treatment of premature ejaculation drugs are prescription drugs, should be taken under the guidance of a doctor, do not blindly buy and use, so as not to cause harm to the body, premature ejaculation or erectile dysfunction and other symptoms should be promptly go to the regular hospital for medical treatment.