CHRB moves to ban pin-firing and blistering across all breeds

The California Horse Racing Board has advanced a rule change that would prohibit pin-firing, freeze-firing of the shins, blistering, and counter-irritant injections for all horses under CHRB jurisdiction, extending restrictions that already apply to many Thoroughbreds under federal HISA rules. At its May 13, 2026 meeting, the board moved proposed amendments to Rule 1867 that would bar blistering and counter-irritant injections on all structures, and would make horses from the 2026 foal crop forward ineligible to race or record a timed workout in California if they have been pin-fired or, for shins, freeze-fired. CHRB staff said the practices intentionally cause tissue damage, lack proven therapeutic benefit, and carry risks including pain, infection, scarring, and masking of underlying pathology. (chrb.ca.gov)

Why it matters: For equine veterinarians and racing practices, the proposal would bring California’s rules for Quarter Horses, Standardbreds, Arabians, and other non-Thoroughbred runners closer to the federal standard already in place for Thoroughbreds, reducing breed-by-breed regulatory differences. The move also tracks the AAEP’s updated 2025 position statements, which say there is no scientific evidence supporting vesicants or internal blistering agents and reflect a broader shift away from older counter-irritant therapies in favor of evidence-based care. (chrb.ca.gov)

What to watch: The proposal now heads into California’s formal rulemaking process, including public notice and comment, before any final adoption and implementation timeline is set. (oal.ca.gov)