The amount of medicine that you take depends on the strength of the medicine. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. If too much is used, the chance of side effects is increased. Children—Use is not recommended. A newer form of the medicine that dissolves on the tongue might work faster than the pill that you swallow. In this case, just leave out the missed dose and take your next dose at the usual time. Dosage and strength for pulmonary hypertension Sildenafil tablets for pulmonary hypertension come in 10mg and 20mg strengths.If you are experiencing symptoms of ED and are considering a generic version of Viagra, your doctor can prescribe a generic alternative to ensure it is safe and FDA-approved. AdWe Have Health & Personal Care Items From Hundreds Of Popular Brands In Stock For You. Get Deals and Low Prices On viritenz On has been visited by 1M+ users in the past monthTypes: Pharmacy, VigRX Prostate Support, Natural Male Enhancement, VigRX Plus and more. Dosage for erectile dysfunction. The recommended dosage of Viagra for erectile dysfunction (ED) is 50 mg, taken as needed about 1 hour before sexual activity. You can take it 30 .