Viagra is a trade name, generic name refers to sildenafil citrate tablets, premature ejaculation eat sildenafil citrate tablets generally have no obvious effect, patients need to follow the doctor’s instructions reasonable use of drugs. Sildenafil citrate tablets can be used to treat erectile dysfunction, mainly to help patients with normal erection, premature ejaculation does not have a significant therapeutic effect. Premature ejaculation patients usually need to take dapoxetine, paroxetine and other selective 5-hydroxytryptamine reuptake inhibitors under the guidance of the doctor’s choice of treatment, but also with the use of chlorpromazine and other tricyclic antidepressants, or lidocaine – proparacaine cream and other local anesthetics. When using sildenafil, it should be noted that the main common adverse effects of this drug are headache, flushing, dizziness, nasal congestion, dyspepsia, and visual abnormalities. The drug is forbidden to be used in combination with nitrate drugs, women, people who are allergic to this product, children, recent cardiovascular status should not have sex with the crowd prohibited this drug. It is recommended that patients use sildenafil citrate tablets in strict compliance with medical advice, and if premature ejaculation occurs, it is also necessary to use reasonable medication under the guidance of a doctor.