Detailed Sildenafil dosage information for adults, the elderly and children. Includes dosages for Erectile Dysfunction and Pulmonary Hypertension; plus renal, liver and dialysis adjustments.

Take sildenafil up to 4 hours before you want to have sex. For sildenafil to work properly, you'll need to be sexually excited. Sildenafil tablets for pulmonary hypertension come in 10mg and 20mg strengths. The usual adult dose is 20mg taken 3 times a day.

Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day.

Most men who use sildenafil to treat ED take the medication 30 minutes to one hour before sexual activity. It’s recommended to avoid high-fat meals while taking this drug, which can affect its efficacy. Since ED can vary in severity, there’s no one-size-fits-all dose of sildenafil for erectile dysfunction.

There are four different Sildenafil dosages prescribed for the treatment of erectile dysfunction. The different Viagra strengths give the option to raise or lower the amount of active ingredient (sildenafil citrate), depending on how your body reacts to the treatment.