The pattern of responses was similar for the other principal question, the ability to achieve an erection sufficient for intercourse. Do not take it more than once a day. At the same time, on-treatment function was better in treated patients who were less impaired at baseline. People taking nitrates like nitroglycerin Nitrostat or isosorbide mononitrate Imdur should not take PDE5 inhibitors, as doing so could result in a dangerous drop in blood pressure. Finally, we checked customer reviews to better understand user experiences with each platform. If you do not have a plastic syringe or spoon, ask your pharmacist for one. Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider.Sildenafil citrate is a white to off-white crystalline powder with a solubility of mg/mL in water and a molecular weight of VIAGRA is formulated as blue, film-coated rounded-diamond-shaped tablets equivalent to 25 mg, 50 mg and mg of sildenafil for oral administration. Takeaway Most Medicare plans do not cover erectile dysfunction (ED) medications like Viagra, but some Part D and Part C plans may help cover generic versions. Generic ED . Examples of Viagra’s more commonly reported side effects include: headache. flushing (temporary warmth, redness, or deepening of skin color) stuffy nose. indigestion (upset stomach) mild vision.