Viagra Prices, Coupons Savings Tips – GoodRx

Viagra can last for about four hours or more in some people and should be taken 30 minutes to an hour before sexual activity. Viagra (sildenafil) is an oral medication used to treat erectile dysfunction (ED). In 30 seconds Does Viagra expire? Yes, but you have about two years before it exceeds its shelf life. Beyond this, there is no guarantee that it will be effective do viagra tablets expire 4.1 Nitrates. Consistent with its known effects on the nitric oxide/cGMP pathway [see Clinical Pharmacology (12.1, 12.2)], VIAGRA was shown to potentiate the hypotensive effects of nitrates, and its administration to patients who are using nitric oxide donors such as organic nitrates or organic nitrites in any form either regularly and/or intermittently is therefore contraindicated. Check your pills to be sure they’re brand-name VIAGRA not the generic. If you think your brand-name prescription has been filled with a generic, talk to your pharmacist. Check Your Pills Viagra (sildenafil) is a prescription drug that s used to treat erectile dysfunction (ED). The drug comes as an oral tablet. It s usually taken as needed about 1 hour before sexual activity.

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