Viagra: Package Insert / Prescribing Information – Drugs.com

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. It usually takes 30 to 60 minutes for sildenafil to work for erectile dysfunction. You can take it up to 4 hours before you want to have sex. Taking sildenafil alone will not cause an does generic viagra really work Answer. Yes, sildenafil (the active ingredient in Viagra), manufactured by Teva, is the FDA approved generic for brand Viagra. It launched on Decem. The announcement from Teva can be seen here. Does Viagra Work the Same as Generic Sildenafil? The active ingredient, sildenafil nitrate, the part that makes the medication work is the same in Viagra and

Sildenafil Alternatives Compared. Cialis (tadalafil) Viagra (sildenafil) Prescription only. Sildenafil is used to treat erectile dysfunction (ED) and to reduce blood pressure in pulmonary arterial hypertension (PAH). It is taken when needed for ED and daily for PAH. A headache, stomach more. Prescription only. alternative to viagra in india What Is Viagra? Viagra (sildenafil) was the first erectile dysfunction pill the FDA approved, back in 2024. Like Cialis, it s a PDE5 inhibitor that increases blood flow to the penis. The difference is that the effects of Viagra don t last very long (only about four to six hours). Viagra is always taken before an anticipated sexual activity. In 2024, Pfizer, the maker of both Revatio and Viagra, sued Teva for patent infringement, or trying to introduce a generic version several years before Pfizer’s patent for Viagra was set to expire.