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Who should not take erectile dysfunction (ED) medications?

Do not take erectile dysfunction medications if you take nitroglycerin or nitrates for heart problems, as the combination of drugs could be deadly.

Talk to your doctor before taking erectile dysfunction medications if you have cardiovascular problems, have recently suffered a heart attack or stroke, or have unusually high or low blood pressure. Sexual activity can be dangerous for people with certain heart conditions.

If you have experienced a prolonged erection in the past, do not take an erectile dysfunction drug without consulting your doctor; in rare cases, these drugs can cause erections lasting longer than four hours, which may permanently damage the penis.

If you have any problems with the retinas of your eyes, especially a condition called retinitis pigmentosa, you may be more likely to suffer serious vision problems from erectile dysfunction medications. Tell your doctor if you have such problems.

Men who have kidney problems, liver problems, blood problems, stomach ulcers, or who suffer from deformities of the penis may not be good candidates for erectile dysfunction medications. Talk to your doctor to find out if erectile dysfunction medications are right for you.

Viagra and other erectile dysfunction drugs are not approved for use in women or children. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.