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Sildenafil citrate (Viagra®) is a medication that has been licensed to treat erectile dysfunction (ED). In clinical studies, up to 88 percent of men reported an improvement in their erections when taking this medication. It is available by prescription only and comes in tablet form. The drug is taken as needed, usually one hour before sexual activity.
While most men have no problems with this ED medication, side effects are possible and may include:
- Facial flushing
- Unexplained rash.
There is also a sildenafil citrate product that is used to treat pulmonary arterial hypertension. To learn about this medication, click Revatio.
(Click Sildenafil Citrate for more information about this product, including how it works, factors affecting your dose, and more.)