Sildenafil works to treat erectile dysfunction in men; the duration of action generally lasts about 0.5 to 4 hours.
Sildenafil is a short-acting drug prescribed to improve erectile dysfunction. The duration of action of the drug is 0.5~4 hours, so it usually needs to be taken orally about 0.5~4 hours before sexual intercourse. The patient can induce a sustained erection for 15-20 minutes after using the drug, and the specific situation needs to be decided according to the individual’s tolerance of the drug.
Common adverse reactions to sildenafil include headache, flushing, dizziness, nasal congestion, indigestion, and visual abnormalities. Rare adverse reactions mainly include facial edema, shock, fatigue, pain, rash, tachycardia, palpitations (rapid heartbeat, often accompanied by panic), low blood pressure, postural hypotension.
Sildenafil is prohibited in combination with nitrates, 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.
The use of sildenafil needs to be carried out under the guidance of a professional doctor, and cannot be used blindly on its own.