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U.S. Department of Health and Human Services

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Sildenafil (marketed as Viagra and Revatio) Information


To report any serious adverse events associated with the use of this drug, please contact the FDA MedWatch program using the contact information at the bottom of this page.

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Regulatory History and Labeling from Drugs@FDA

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Contact FDA

1-800-332-1088
1-800-FDA-0178 Fax
Report a Serious Problem

MedWatch Online

Regular Mail: Use postage-paid FDA Form 3500

Mail to: MedWatch 5600 Fishers Lane

Rockville, MD 20857
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