However, it stays in your body for up to 36 hours and can be taken every 24 hours, so it can work for you constantly. Is 20mg of Cialis better than mg of Viagra? Cialis vs. Viagra is always taken as needed, usually an hour before having sex. Food and Drug Administration has approved fifteen drug manufacturers to market generic sildenafil in the United States. You are encouraged to report adverse events related to Viatris products by calling U. Your healthcare provider can help you determine the right dosage for you.Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud’s phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. [8]. Sildenafil Prices, Coupons and Patient Assistance Programs. Sildenafil is a member of the agents for pulmonary hypertension drug class and is commonly used for Erectile Dysfunction, Pulmonary Arterial Hypertension, and Sexual Dysfunction – SSRI Induced.. Brand names for sildenafil include Viagra, Revatio, and Liqrev. The cost for sildenafil . Compare prices. Drug prices vary by pharmacy. Use GoodRx to find current prices and discounts. Get free coupons. GoodRx coupons can help you pay less than the cash .

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