Code of Federal Regulations Title 21. Food and Drugs § 21.520.284b Cambendazole pellets

(1) Amount. Administer 20 milligrams cambendazole per kilogram body weight (6 ounces per 1,000 pounds) by mixing with normal grain ration given at one feeding. Doses for individual horses should be mixed and fed separately to assure that each horse will consume the correct amount. For animals maintained on premises where reinfection is likely to occur, re-treatments may be necessary. For most effective results, re-treat in 6 to 8 weeks.

(2) Indications for use. For the control of large strongyles (Strongylus vulgaris, S. edentatus, S. equinus);  small strongyles (Trichonema, Poteriostomum, Cylicobrachytus, Craterostomum, Oesophagodontus);  roundworms (Parascaris);  pinworms (Oxyuris);  and threadworms (Strongyloides).

(3) Limitations. Do not administer to pregnant mares during first 3 months of pregnancy. Do not use in horses intended for human consumption. Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism.