Code of Federal Regulations Title 21. Food and Drugs § 21.520.2473a Tioxidazole granules

(i) Amount. 5 milligrams per pound of body weight as a single dose.

(ii) Indications for use. Removal of mature large strongyles (Strongylus edentatus, S. equinus, and S. vulgaris), mature ascarids (Parascaris equorum), mature and immature (4th larval stage) pinworms (Oxyuris equi), and mature small strongyles (Triodontophorus spp.)

(iii) Limitations. For administration with feed:  Sprinkle required amount of granules on a small amount of the usual grain ration and mix. Prepare for each horse individually. Withholding of feed or water not necessary. Not for use in horses intended for food. The reproductive safety of tioxidazole in breeding animals has not been determined. Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism. It is recommended that this drug be administered with caution to sick or debilitated horses.