What is generic Viagra and why is it available?
Generic Viagra is the non-brand name version of sildenafil, a medication used to treat erectile dysfunction [1]. It became available in the United States after the patent protecting Viagra expired, allowing other pharmaceutical companies to manufacture and sell their own versions of the drug [2].
When did generic Viagra become available in the US?
The patent for Viagra, held by Pfizer, expired in December 2017 [2]. This expiration allowed for the introduction of generic sildenafil to the U.S. market [1].
How does generic sildenafil compare to brand-name Viagra?
Generic sildenafil is chemically identical to brand-name Viagra and contains the same active ingredient, sildenafil citrate [1][3]. Both medications are approved by the U.S. Food and Drug Administration (FDA) and undergo the same rigorous testing for safety and efficacy [1]. The primary differences are typically in the inactive ingredients, such as binders and fillers, which can affect the tablet's appearance and color, and the cost, with generic versions generally being more affordable [3].
What are the common uses for sildenafil?
Sildenafil, in both its brand-name and generic forms, is prescribed to treat erectile dysfunction (ED) [1]. It works by increasing blood flow to the penis, helping men achieve and maintain an erection during sexual stimulation [1]. Sildenafil is also used to treat pulmonary arterial hypertension (PAH) under the brand name Revatio [1].
What is the typical cost of generic sildenafil?
The cost of generic sildenafil is generally lower than that of brand-name Viagra [3]. Prices can vary significantly depending on the pharmacy, insurance coverage, and the dosage prescribed [3].
How can I get a prescription for sildenafil?
A prescription from a licensed healthcare provider is required to obtain sildenafil [1]. A doctor will assess a patient's medical history and determine if sildenafil is an appropriate treatment for their condition.
What are the potential side effects of sildenafil?
Common side effects of sildenafil include headache, flushing, indigestion, nasal congestion, and visual disturbances (such as blurred vision or changes in color perception) [1]. Less common but more serious side effects can occur, and patients should seek immediate medical attention if they experience priapism (a prolonged erection lasting more than four hours), sudden vision loss, or a sudden decrease in hearing [1].
Are there other medications for erectile dysfunction?
Yes, other medications are available for treating erectile dysfunction, including tadalafil (Cialis), vardenafil (Levitra), and avanafil (Stendra) [1]. These drugs belong to the same class of medications known as PDE5 inhibitors and work similarly by increasing blood flow to the penis.
Sources
1. U.S. Food & Drug Administration. (n.d.). Sildenafil Citrate. Retrieved from https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/sildenafil-citrate-drug-safety-communication-fda-requiring-label-changes-about-vision-loss
2. DrugPatentWatch.com. (n.d.). Viagra Patent Expiration. Retrieved from https://drugpatentwatch.com/viagra-patent-expiration/
3. Mayo Clinic. (n.d.). Sildenafil (Oral Route). Retrieved from https://www.mayoclinic.org/drugs-supplements/sildenafil-oral-route/side-effects/drg-20061799