Viagra is the trade name, generic name is sildenafil citrate tablets, if the condition needs and no contraindications to the use of drugs, 40-year-old men can take.
Sildenafil citrate tablets are mainly used for the treatment of erectile dysfunction, the current instructions do not make restrictions on the age, if the condition requires, good health, and no contraindications to the use of medication, 40-year-old men can take sildenafil citrate tablets orally.
The main adverse reactions of Sildenafil Citrate Tablets are headache, flushing, visual abnormalities, arthralgia, nausea, rash, photosensitivity reactions, asthma, cystitis, sudden hearing loss, etc. Combination with nitrate esters and guanylate cyclase agonists is prohibited.
Sildenafil citrate tablets should be used under the guidance of a doctor, do not buy and apply on your own to avoid serious adverse reactions.