Viagra (sildenafil): Side effects, dosage, how long it lasts

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Your doctor will recommend the dosage of Viagra that s right for you. Form and strengths (25 mg, 50 mg, 100 mg) Viagra comes as an oral tablet, in these strengths: 25 milligram (mg), 50 mg, and Viagra comes as an oral tablet in different dosages. Discuss with your doctor what s an appropriate dose for you. For daily use, Goldstein said, the generic form, sildenafil, comes in 20-mg tablets. buy viagra herbal Viagra can be taken after eating or on an empty stomach. However, if you take Viagra after a high-fat meal (e.g. fried food) you might find it takes longer to feel an effect. How does Viagra work? Viagra’s active ingredient (sildenafil citrate) increases blood flow to the penis. It enables a firmer, longer-lasting erection if you are sexually TABLETS (Viagra) Initial dose: 50 mg orally once a day, as needed, about 1 hour prior to sexual activity Maintenance dose: May increase to 100 mg or decrease to 25 mg once a day, based on efficacy and tolerability. Maximum dose: 100 mg orally once a day Comments: This drug may be taken anywhere from 30 minutes to 4 hours before sexual activity.