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On the 15 of October 2026, the Directors of the IHRB approved the following changes which came into effect on 15 October 2026:
Rule 87 (ii) A Horse is not qualified to start for any Race... *New Sub Section (h)
(h) if it has been administered clenbuterol (h) if it has been administered clenbuterol otherwise than in accordance with all of the following conditions:
(i) the clenbuterol has been administered for therapeutic use following a clinical diagnosis of airway disease by a Veterinary Surgeon supporting its use as an appropriate treatment;
(ii) the diagnosis and administration are documented in the veterinary and treatment records, which must be made available to the IHRB on request;
(iii) the clenbuterol product administered must be licensed for use in horses in Ireland, or imported or supplied in Ireland by a Veterinary Surgeon in accordance with applicable law;
(iv) administration must be for not more than 14 consecutive days and otherwise in accordance with the authorised directions for use;
(v) there must be at least 30 clear days between the day on which the last dose of a course of treatment is administered and the day of the Race; and
(vi) no more than two courses of treatment may be administered in any period of six months, each course being for not more than 14 consecutive days, with at least 30 clear days between the last day of the first course and the first day of the second course.