Keep out of the reach of children. Store mixed oral liquid in the refrigerator. Use only the brand of this medicine that your doctor prescribed. This medicine comes with a patient information leaflet. These effects on the metabolite are not expected to be of clinical consequence. The major circulating metabolite results from N-desmethylation of sildenafil, and is itself further metabolized.Side Effects. Dizziness, headache, flushing, or stomach upset may occur. Vision changes such as increased sensitivity to light, blurred vision, or trouble telling blue and green colors apart may. Best prices for generic viagra on the Internet! The safest way is to ask your physician to try an alternate prescription. Sildenafil 50mg Tablets are designed for men who are suffering from Erectile Dysfunction problems. $ x 4. Carbon black joystick $ x 1. Magimons black framed print $ Inventory subtotal: $ Go. 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 1 .