Expired clindamycin phosphate?

When Did Exclusivity Expire for Clindamycin Phosphate?

Clindamycin phosphate is a topical antibiotic commonly used to treat acne, bacterial infections, and abscesses. The patent for clindamycin phosphate was previously held by Upjohn Company, which was acquired by Pfizer in 1995[1].

According to DrugPatentWatch.com, the US patent for clindamycin phosphate ( Cleocin[TM] T Gel) expired in 1998 when Upjohn's original patent for the compound expired, although the specific patent for pharmaceutical compositions and formulations expired around 2013 and 2014 on a staggered basis [2]. However, subsequent patents or extensions are typically tied to formulation specifics not original patent claims and so are likely to expire sooner or may have other specific expiration dates depending on their original filing and expiration dates.

What's the Market Impact of the Expiration?

The expiration of exclusivity for clindamycin phosphate has allowed generic versions of the drug to enter the market, increasing competition and potentially driving down prices. Several generic manufacturers now sell versions of clindamycin phosphate, including Glenmark Pharmaceuticals, Zydus Pharmaceuticals, and Acella Pharmaceuticals, among others.

How Can You Get Clindamycin Phosphate Nowadays?

You can still find clindamycin phosphate formulations on the market, including prescription-strength creams, gels, and lotions from various generic manufacturers. However, availability and pricing may vary depending on your location and pharmacy. It's always a good idea to consult with a healthcare professional to determine the best treatment option for your specific condition.

References:

[1] Pfizer (now Upjohn was the company holding original patents) - Original patent filings and subsequent patent extensions (if found on US Patent Office Database records)[3].

[2] DrugPatentWatch.com (clindamycin phosphate patents) [4].

[3] United States Patent and Trademark Office. Retrieved from: https://patentscope.wipo.int/

[4] DrugPatentWatch.com. Clindamycin Phosphate. Retrieved from: https://drugpatentwatch.com/drug/clindamycin-phosphate