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Generic HemiClor Availability

Last updated on Sep 10, 2026.

HemiClor is a brand name of chlorthalidone, approved by the FDA in the following formulation:

HEMICLOR (chlorthalidone - tablet; oral)
Manufacturer Approval date Strengths [RLD]
PRM PHARMA March 17, 2025
  • 12.5MG [RLD]

Has a generic version of HemiClor been approved?

No, the FDA has not approved a generic version of HemiClor.

Note: Fraudulent online pharmacies may attempt to sell an illegal generic version of HemiClor. 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.

Patent protection

Patents are granted by the U.S. Patent and Trademark Office at any time during a drug's development. These patents may include claims related to the drug's formulation, manufacturing process, or other aspects.

Patent Title Oral solid chlorthalidone compositions
Patent Number 12,667,554
Issue Date June 30, 2026
Inventor Gande; Mukteeshwar & Billa; Praveen Reddy & Surikanti; Jagatpal Reddy
Current Assignee Ingenus Pharmaceuticals, LLC (Orlando, FL)
Patent Description
Described herein are solid oral compositions comprising chlorthalidone, or a pharmaceutically acceptable salt thereof; and a pharmaceutically acceptable excipient, wherein the chlorthalidone has a Sauter mean diameter ranging from about 8 μm to...
Described herein are solid oral compositions comprising chlorthalidone, or a pharmaceutically acceptable salt thereof; and a pharmaceutically acceptable excipient, wherein the chlorthalidone has a Sauter mean diameter ranging from about 8 μm to about 14 μm. Methods of making and using these compositions are also described herein.
Patent Expiry Dates
September 4, 2045
Drug Product: Yes

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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.