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# FDA Approves Zycosan for Horses with Osteoarthritis
- URL: https://www.fdaweb.com/fda-approves-zycosan-for-horses-with-osteoarthritis/
- Published: 2023-01-05T12:00:00.000Z
- Updated: 2026-09-14T18:10:51.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5153473

FDA has approved Anzac Animal Health’s Zycosan (pentosan polysulfate sodium injection) to control clinical signs associated with osteoarthritis in horses. An agency [notice](https://www.fda.gov/animal-veterinary/cvm-updates/fda-approves-first-injectable-pentosan-osteoarthritis-horses?ref=fdaweb.com) says Zycosan is a heparin-like compound and is the first pentosan injectable product to receive agency approval.

The notice says that unapproved injectable formulations, including compounded formulations, of pentosan have a long history in horses, but Zycosan is the first injectable pentosan product to meet the agency’s standards.