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Warning

Call your doctor or seek emergency treatment immediately if you experience any of the following symptoms:
Rash
Painful erection
Prolonged erection (longer than 4 hours)
Fainting
Chest pain
Itching or burning during urination

Stop taking these medications and call a doctor or health care provider right away if you experience sudden or decreased vision loss in one or both eyes. A rare vision problem called NAION has been reported by a few men using these drugs. NAION (nonarteritic anterior ischemic optic neuropathy) causes a sudden loss of eyesight because blood flow is blocked to the optic nerve. People who have a higher chance for NAION include those who:
Are over 50 years old
Smoke
Have heart disease
Have diabetes
Have high blood pressure
Have high cholesterol
Have certain eye problems
How Should These Drugs Be Stored?

These drugs should be kept in its original container and out of reach of children. Store them away from excess heat and moisture (not in the bathroom). Discard any medication that has expired or is no longer needed.

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