thyroxine

Everything Old Is New Again: Examining Thyroxine

Off-label use of thyroxine (sold as Thyro-L, Levoxine Powder, or Levo-Powder) has been popular among trainers since the 1970s, but recent revelations from leading Thoroughbred conditioners about blanket use of the product in their barns has veterinarians and regulators concerned. When used according to label instructions, levothyroxine supplements are intended to correct hypothyroidism—a condition in […]

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CHRB Clarifies Requirements for Thyroid Meds

The California Horse Racing Board (CHRB), in an effort to curb overuse of thyroid medications, has issued new instructions to veterinarians and horsemen for prescribing, dispensing, and labeling thyroid hormones. The efforts are to ensure that those involved are in compliance with CHRB regulations. The advisory issued Monday (THYROXINE ADVISORY) points out that all thyroxine […]

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Drape: Trainer Organizations Deny Doping Problem

After assurances to Congress from the head of the National Horsemen’s Benevolent and Protective Association that lawmakers are attempting to “address a problem that does not exist” with federal legislation to regulate medication, the horse racing industry went through a turbulent 24 hours following a hearing of a House of Representatives panel on Thursday. Shortly […]

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