Generic Zilretta Availability
Last updated on May 7, 2025.
Zilretta is a brand name of triamcinolone, approved by the FDA in the following formulation(s):
ZILRETTA (triamcinolone acetonide - for suspension, extended release;intra-articular)
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Manufacturer: PACIRA PHARMS INC
Approval date: October 6, 2017
Strength(s): 32MG/VIAL [RLD]
Is there a generic version of Zilretta available?
No. There is currently no therapeutically equivalent version of Zilretta available in the United States.
Note: Fraudulent online pharmacies may attempt to sell an illegal generic version of Zilretta. These medications may be counterfeit and potentially unsafe. If you purchase medications online, be sure you are buying from a reputable and valid online pharmacy. Ask your health care provider for advice if you are unsure about the online purchase of any medication.
See also: Generic Drug FAQ.
Related patents
Patents are granted by the U.S. Patent and Trademark Office at any time during a drug's development and may include a wide range of claims.
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Corticosteroids for the treatment of joint pain
Patent 8,828,440
Issued: September 9, 2014
Inventor(s): Bodick Neil & Blanks Robert C. & Kumar Anjali & Clayman Michael D. & Moran Mark
Assignee(s): Flexion Therapeutics, Inc.Corticosteroid microparticle formulations are provided for use for treating pain, including pain caused by inflammatory diseases such as osteoarthritis or rheumatoid arthritis, and for slowing, arresting or reversing structural damage to tissues caused by an inflammatory disease, for example damage to articular and/or peri-articular tissues caused by osteoarthritis or rheumatoid arthritis. Corticosteroid microparticle formulations are administered locally as a sustained release dosage form (with or without an immediate release component) that results in efficacy accompanied by clinically insignificant or no measurable effect on endogenous cortisol production.
Patent expiration dates:
- August 4, 2031✓
- August 4, 2031
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Corticosteroids for the treatment of joint pain
Patent 9,555,048
Issued: January 31, 2017
Inventor(s): Bodick Neil & Blanks Robert C. & Kumar Anjali & Clayman Michael D. & Moran Mark
Assignee(s): FLEXION THERAPEUTICS, INC.Corticosteroid microparticle formulations are provided for use for treating pain, including pain caused by inflammatory diseases such as osteoarthritis or rheumatoid arthritis, and for slowing, arresting or reversing structural damage to tissues caused by an inflammatory disease, for example damage to articular and/or peri-articular tissues caused by osteoarthritis or rheumatoid arthritis. Corticosteroid microparticle formulations are administered locally as a sustained release dosage form (with or without an immediate release component) that results in efficacy accompanied by clinically insignificant or no measurable effect on endogenous cortisol production.
Patent expiration dates:
- August 4, 2031✓
- August 4, 2031
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Glossary
| Term | Definition |
|---|---|
| Drug Patent | A drug patent is assigned by the U.S. Patent and Trademark Office and assigns exclusive legal right to the patent holder to protect the proprietary chemical formulation. The patent assigns exclusive legal right to the inventor or patent holder, and may include entities such as the drug brand name, trademark, product dosage form, ingredient formulation, or manufacturing process A patent usually expires 20 years from the date of filing, but can be variable based on many factors, including development of new formulations of the original chemical, and patent infringement litigation. |
| Drug Exclusivity | Exclusivity is the sole marketing rights granted by the FDA to a manufacturer upon the approval of a drug and may run simultaneously with a patent. Exclusivity periods can run from 180 days to seven years depending upon the circumstance of the exclusivity grant. |
| RLD | A Reference Listed Drug (RLD) is an approved drug product to which new generic versions are compared to show that they are bioequivalent. A drug company seeking approval to market a generic equivalent must refer to the Reference Listed Drug in its Abbreviated New Drug Application (ANDA). By designating a single reference listed drug as the standard to which all generic versions must be shown to be bioequivalent, FDA hopes to avoid possible significant variations among generic drugs and their brand name counterpart. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.