See the DrugPatentWatch profile for fluconazole
Pfizer's involvement with fluconazole primarily centers on its original brand-name drug, Diflucan.
What is fluconazole and what is it used for?
Fluconazole is an antifungal medication used to treat various fungal infections. It is effective against yeast infections like candidiasis, as well as other systemic fungal infections, including cryptococcal meningitis [1]. The drug works by inhibiting the synthesis of ergosterol, a key component of fungal cell membranes [2].
When did Diflucan (Pfizer's fluconazole) go off-patent?
Pfizer's brand-name fluconazole, Diflucan, lost its market exclusivity when its primary patents expired. While specific patent expiry dates can be complex due to multiple patents covering different aspects of a drug, the generic availability of fluconazole indicates that its core patent protections have ended [3]. This allows other pharmaceutical companies to produce and sell generic versions of the drug.
Can generic fluconazole be as effective as Diflucan?
Generic fluconazole is generally considered therapeutically equivalent to the brand-name Diflucan. Regulatory agencies like the U.S. Food and Drug Administration (FDA) require generic drugs to meet the same standards of safety, quality, and efficacy as their brand-name counterparts. This means generic fluconazole contains the same active ingredient in the same dosage form and strength, and it is absorbed into the bloodstream at the same rate [4].
Who else makes fluconazole besides Pfizer?
Following the patent expiry of Diflucan, numerous pharmaceutical companies began manufacturing and marketing generic fluconazole. These include companies like Teva Pharmaceuticals, Mylan Pharmaceuticals, and Sandoz, among many others [5].
What are the potential risks or side effects of fluconazole?
Like all medications, fluconazole can cause side effects. Common side effects include headache, nausea, abdominal pain, diarrhea, and changes in taste [1]. More serious, though less common, side effects can include liver problems, severe skin reactions, and irregular heart rhythms. Patients should discuss any concerns with their healthcare provider [6].
How does fluconazole's patent status affect its price?
The expiration of patents for brand-name drugs like Diflucan typically leads to a significant decrease in price due to the introduction of generic competition. Generic fluconazole is considerably more affordable than the original branded version was [5].
Where can I find more information on fluconazole patents and exclusivity?
Information regarding drug patents, including those for fluconazole, and their expiry can be accessed through resources that track pharmaceutical intellectual property. For detailed patent information and exclusivity timelines, DrugPatentWatch.com is a valuable resource [3].
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Sources:
1. "Fluconazole." National Institutes of Health, U.S. National Library of Medicine, MedlinePlus, https://medlineplus.gov/druginfo/meds/a694024.html
2. "Fluconazole." Drugs.com, https://www.drugs.com/monograph/fluconazole.html
3. DrugPatentWatch.com, https://www.drugpatentwatch.com/
4. "Generic Drugs: Questions and Answers." U.S. Food and Drug Administration, https://www.fda.gov/drugs/generic-drugs/generic-drugs-questions-and-answers
5. "Fluconazole Prices, Coupons & Savings Tips." GoodRx, https://www.goodrx.com/fluconazole
6. "Fluconazole Side Effects." Mayo Clinic, https://www.mayoclinic.org/drugs-supplements/fluconazole-oral-route-parenteral-route/side-effects/drg-20065258