NOT to prescribe Viagra to men taking nitrates

Pfizer is warning physicians NOT to prescribe Viagra to mentaking nitrates...NTG, isosorbide, even illicit "poppers."

Combining Viagra with any form of nitrates is contraindicatedbecause Viagra potentiates the vasodilatory effect of nitric oxide.This can lead to sudden, severe hypotension.

There are reports of six deaths so far...but it's not knownyet whether the Viagra was at fault.

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