Wiki viagra generic?

See the DrugPatentWatch profile for viagra

What is Viagra's generic name?

Viagra's generic name is sildenafil [1].

When did Viagra go generic?

Sildenafil became available generically in the United States on December 11, 2017 [2]. This followed the expiration of Pfizer's patents for Viagra [3].

How does generic sildenafil compare to Viagra?

Generic sildenafil is bioequivalent to Viagra, meaning it has the same active ingredient, dosage form, strength, and route of administration [1]. Regulatory agencies, like the U.S. Food and Drug Administration (FDA), approve generic drugs only after they demonstrate they are safe and effective and have the same therapeutic effect as the brand-name drug [4]. Therefore, generic sildenafil is expected to have the same effects and side effects as Viagra [1].

Where can I find information on sildenafil patents?

Information regarding patents for sildenafil and other drugs can be found on DrugPatentWatch.com [5]. This resource tracks patent expirations and exclusivity periods for pharmaceuticals, which can inform the availability of generic versions.

What is sildenafil used for?

Sildenafil is primarily prescribed to treat erectile dysfunction (ED) in men [1]. It works by increasing blood flow to the penis, making it easier to achieve and maintain an erection during sexual stimulation [1]. Sildenafil is also used to treat pulmonary arterial hypertension (PAH) under the brand name Revatio [6].

Are there different brands of generic sildenafil?

Yes, following patent expiration, multiple pharmaceutical manufacturers can produce and market generic versions of sildenafil [3]. These may be available under various brand names from different companies.

How much does generic sildenafil cost?

The cost of generic sildenafil is typically significantly lower than that of brand-name Viagra [4]. Prices can vary depending on the manufacturer, dosage, and the pharmacy where it is purchased.

What are the potential side effects of sildenafil?

Common side effects of sildenafil can include headache, flushing, indigestion, nasal congestion, visual disturbances (such as blurred vision or color changes), and back pain [1]. Less common but more serious side effects can occur, and individuals should consult with a healthcare provider if they experience any concerning symptoms [1].

Sources

1. https://www.drugs.com/viagra.html
2. https://www.fda.gov/about-fda/center-drug-evaluation-and-research/new-generic-drug-approvals
3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3070510/
4. https://www.fda.gov/drugs/generic-drugs/what-generic-drugs-are-and-how-they-are-approved
5. https://drugpatentwatch.com/
6. https://www.rxlist.com/revatio-drug.htm