The most common side effects of VIAGRA: headache; flushing; upset stomach; abnormal vision, such as changes in color vision such as having a blue color tinge and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash. J Family Community Med. Our experts can discuss options with you, and adjust your treatment to fit around you. Consult your healthcare practitioner for specific guidance if you are uncertain about the right dosage or timing. Men who are taking nitrates or nitroglycerin Those with hypotension Men who have heart disease or heart failure ED can be the first sign of other health conditions, including cardiovascular disease and diabetes. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety.Generic sildenafil is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower. Get sildenafil for as low as $, which is 95% off the average retail price of $ for the most common version, by . Used for Erectile Dysfunction. Sildenafil (Viagra) is taken by mouth to treat erectile dysfunction (ED). You take it only as needed, typically about an hour before sexual activity (but you can take it anywhere between 30 minutes to 4 hours before sex). Don’t take sildenafil (Viagra) more than once a day because doing so can put you at higher. Generic name: sildenafil (oral) [ sil-DEN-a-fil ] Brand names: Revatio, Viagra Drug class: Impotence agents Medically reviewed by Sophia Entringer, PharmD. Last updated on Uses Warnings Before taking Dosage Side effects Interactions FAQ What is Viagra?

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