ViagraŽ Brand Name: ViagraŽ Active Ingredient: sildenafil citrate Strength(s): 25mg, 50mg & 100mg Dosage Form(s): Oral tablet Company Name: __88 Pfizer Inc. Availability: Prescription only Date Approved by FDA: March 27, 1998 What is Viagra used for? Viagra is used to treat impotence in men. Viagra increases the body's ability to achieve and __88 maintain an erection during sexual stimulation. Viagra does not protect you ...