N.Y. Comp. Codes R. & Regs. tit. 9, § 4120.2
(a) The following substances are permitted to be used at any time up to race time:
(2) antibiotics, vitamins, electrolytes, and other food supplements so long as they are administered orally and as long as they do not contain any other drug or by their nature, exhibit drug-like actions or properties.
(b) Eligibility for the administration of furosemide.
(1) The administration of furosemide is permissible to a horse that has qualified for such use by any of the following means:
(2) If it is determined that a horse has qualified pursuant to paragraph (1) of this subdivision, and the owner or trainer elects to make the horse eligible for the administration of furosemide, the horse shall be placed on a list of horses that have bled, to be maintained by the State veterinarian, and shall not be permitted to race for the following periods of time: Such list shall be made available to the public for inspection.
(6) Administration of furosemide. For the purposes of this section, furosemide shall be administered only in the following manner:
(c) The following substances may be administered by any means until 24 hours before the scheduled post time of the race in which the horse is to compete:
(8) Sucralfate.
They may not be administered by any means within 24 hours of the scheduled post time of the race in which the horse is to compete. In this regard, substances ingested by a horse shall be deemed administered at the time of eating and drinking. It shall be part of the trainer's responsibility to prevent such ingestion within such 24 hours.
(e) The following substances are permitted to be administered by any means until 48 hours before the scheduled post time of the race in which the horse is to compete:
(20) dimethyl sulfoxide (i.e., DMSO).
None of these substances may be administered within 48 hours of the scheduled post time of the race in which the horse is to compete. In this regard, substances ingested by a horse shall be deemed administered at the time of eating and drinking. It shall be part of the trainer's responsibility to prevent such ingestion within such 48 hours.
(f) The following substances may be administered by any means until 72 hours before the scheduled post time of the race in which the horse is to compete:
(8) vermifuges (worm medicines), except phenothiazine.
They may not be administered by any means within 72 hours of the scheduled post time of the race in which the horse is to compete. In this regard, substances ingested by a horse shall be deemed administered at the time of eating and drinking. It shall be part of the trainer's responsibility to prevent such ingestion within such 72 hours.
(g) The following substances are permitted to be administered by any means until 96 hours before the scheduled post time of the race in which the horse is to compete:
(16) [z]xylazine.
They may not be administered with in 96 hours of the start of the scheduled post time of the race in which the horse is to compete. In this regard, substances ingested by a horse shall be deemed administered at the time of eating and drinking. It shall be part of the trainer's responsibility to prevent such ingestion within such 96 hours.
Drugs and medications are permitted to be used only in accordance with the following provisions: