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  2. Things You Probably Don't Know About Viagra (Like What ... - AOL

    www.aol.com/things-probably-dont-know-viagra...

    Generic sildenafil (and brand-name Viagra) is a medication for the treatment of ED, Raynaud’s phenomenon, and pulmonary arterial hypertension. To understand how Viagra works, we need to look at ...

  3. Sildenafil - Wikipedia

    en.wikipedia.org/wiki/Sildenafil

    The Korean Court system made a ruling against Pfizer in June 2012, allowing for the unhindered domestic production of generic prescription sildenafil. [121] During 2012 Viagra lost its position as the top selling erectile dysfunction treatment in South Korea. This development was credited largely "due to the introduction of generic products."

  4. 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 ...

  5. How to Get Better Viagra Results in 2025 - AOL

    www.aol.com/better-viagara-results-2025...

    How to Take Viagra for Best Results. Like other prescription medicines, Viagra and its generic form, sildenafil, work best when you take them under the right conditions.

  6. Teva Canada Ltd v Pfizer Canada Inc - Wikipedia

    en.wikipedia.org/wiki/Teva_Canada_Ltd_v_Pfizer...

    Teva Canada launched Novo-Sildenafil, a generic version of Viagra, on the day the Supreme Court of Canada released its decision. [5] [21] [22] On August 5, 2014, the Supreme Court of British Columbia certified a class action against Pfizer.

  7. Generic drug - Wikipedia

    en.wikipedia.org/wiki/Generic_drug

    In some countries, such as Brazil (photo) and France, more than 20% of all drug sales in units are generic. A generic drug is a pharmaceutical drug that contains the same chemical substance as a drug that was originally protected by chemical patents. Generic drugs are allowed for sale after the patents on the original drugs expire.

  8. Over-the-counter drug - Wikipedia

    en.wikipedia.org/wiki/Over-the-counter_drug

    Schedule 2: Does not require a prescription but requires an assessment by a pharmacist prior to sale. These drugs are kept in an area of the pharmacy where there is no public access and may also be referred to as "behind-the-counter" drugs. Schedule 3: Does not require a prescription but must be kept in an area under the supervision of a ...

  9. 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.

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