Generally, tadalafil is for the treatment of erectile dysfunction, not used as a drug for the treatment of premature ejaculation, premature ejaculation is usually caused by psychological factors or disease factors, which can be psychotherapeutic or drug therapy. Tadalafil is mainly used for the treatment of erectile dysfunction in the clinic, usually need to be taken before having sex, may cause back pain, myalgia, flushing and other adverse reactions, allergic to the drug, or are taking nitrates and guanylate cyclase stimulant patients can not take tadalafil. Premature ejaculation is a kind of ejaculatory dysfunction, if it is caused by unpleasant sexual experience, tension and anxiety and other psychological factors, you can carry out psychological treatment to help patients eliminate tension and anxiety about sexual life, you can also use lidocaine, sertraline and other drugs to prolong the ejaculatory latency time. If the premature ejaculation is caused by disease factors such as glans phimosis, you can use miconazole cream, betamethasone cream and other drugs for treatment, and the symptoms of premature ejaculation will gradually be relieved after the glans phimosis is cured. If you have symptoms of premature ejaculation, you should consult a doctor in time and take the appropriate drugs for treatment, so as to avoid the adverse consequences of private medication.