Concurrent use of Viagra and nitrates are contraindicated

Patient

Q: I am 55 with CAD, I am on 30mg of Imdur and have trouble getting an erection. Can I cut the dosage in half, still get the benefit, then safely take Viagra, or something like it?

Doctor

A:   The use of regular or occasional organic nitrates in any form (such as isosorbide mononitrate) is contraindicated with concurrent use of Viagra (sildenafil). Therefore I do not recommend this combination. I would advise discussing alternative therapies or prescriptions with your family doctor..

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