Generally 1 sexual intercourse is sufficiently recommended overnight after normal administration of sildenafil tablets. Sildenafil Tablet is a kind of drug for treating erectile dysfunction in men, which can be taken at any time within 0.5-4 hours before sexual activity, and at most once a day, and after taking it, it can improve men’s erectile function in a short period of time. However, it does not mean that you can have sex without restraint after taking it, and it is generally recommended to have sex only once after taking it. The drug can cause headache, flushing, indigestion, visual abnormalities and other adverse reactions. Taking sildenafil tablets requires sexual stimulation, when there is no sexual stimulation, taking sildenafil tablets is not therapeutic. Sildenafil is prohibited in combination with nitrate drugs, the drug is contraindicated in women, people who are allergic to the product, children, people whose recent cardiovascular state does not allow them to have sex. Sildenafil tablets are prescription drugs and require a doctor’s prescription to buy. You should be careful not to use the drug privately, in order to avoid adverse reactions please use under the guidance of a doctor.