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  2. What Happens If You Take Viagra and You Don't Need It? - AOL

    www.aol.com/happens-viagra-dont-105800158.html

    If you struggle with ED, drugs like Viagra®, sildenafil, tadalafil, and other FDA-approved medications could help with your performance. But if you’re not prescribed one of these meds, taking ...

  3. Assist by AOL Terms of Service

    help.aol.com/articles/assist-by-aol-terms-of-service

    Any Free Trial is limited to one free trial per customer for the Service. Unless otherwise stated and unless you cancel your subscription prior to the expiration of the Free Trial, periodic subscription fees will be charged at the then-applicable rate upon expiration of the Free Trial period and will continue to be charged until the ...

  4. Is Sildenafil Safe for This Common Male Problem? - AOL

    www.aol.com/sildenafil-safe-common-male-problem...

    Sildenafil is most commonly prescribed to be taken one time per day in doses between 25 and 100 mg for ED. Your healthcare provider will determine the best dosage for you based on a number of factors.

  5. Sildenafil - Wikipedia

    en.wikipedia.org/wiki/Sildenafil

    Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9]

  6. Your ED Pill Guide: Everything You Need to Know Before ... - AOL

    www.aol.com/ed-pill-guide-everything-know...

    Viagra (or sildenafil) lasts three to five hours after it’s consumed. Cialis (tadalafil) has a half-life of 17.5 hours, meaning this drug lasts up to 36 hours after it’s consumed.

  7. Drug expiration - Wikipedia

    en.wikipedia.org/wiki/Drug_expiration

    The labeled expiration date is a manufacturer's promise for a time until which the drug will have full efficacy and be safe as manufactured. [4] The labeled expiration date is not an indication of when a drug has become ineffective or unsafe to use. [4] Many drugs are effective for years after their expiration dates. [4]

  8. Tadalafil - Wikipedia

    en.wikipedia.org/wiki/Tadalafil

    One advantage Cialis has over Viagra and Levitra is its 17.5-hour half-life (thus Cialis is advertised to work for up to 36 hours, [32] after which time there remains approximately 25% of the absorbed dose in the body) when compared to the four-hour half-life of sildenafil (Viagra).

  9. Facing Off Against Counterfeit Online Pharmacies: Pfizer ...

    www.aol.com/news/2013-05-06-facing-off-against...

    If you are taking protease inhibitors, such as for the treatment of HIV, your doctor may recommend a 25 mg dose and may limit you to a maximum single dose of 25 mg of Viagra in a 48-hour period.

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