Before starting, stopping, or changing any medications while taking sildenafil, please get the advice of your doctor or pharmacist. National Library of Medicine. Talk with your healthcare provider about your sex life and desired use. However, some states require a live video consultation. Taking generic ED medications is an effective way to save money without sacrificing quality. It is good for the occasional user but must be taken on an empty stomach. · The highest recommended Viagra dose for treating erectile dysfunction (ED) is mg per day, according to the drug’s manufacturer. Doses of mg or mg would be considered off-label use. VIAGRA is available by prescription only in 25 mg, 50 mg, and mg tablets. Patients should always ask their doctors for medical advice about adverse events. You are encouraged to report adverse events related to Viatris products by calling (U.S. only). If you prefer, you may contact the U.S. Food and Drug Administration (FDA. SILDENAFIL CITRATE (Generic for VIAGRA) QTY 30 • MG • Tablet • Near EDIT; Add to Medicine Chest; Set Price Alert; More Ways to Save; SILDENAFIL/Viagra (sil DEN a fil) treats erectile dysfunction (ED). It works by increasing blood flow to the penis, which helps to maintain an erection. MG | Tablet | 30 .