21 C.F.R. § 520.2380c Thiabendazole bolus.
Title 21 - Food and Drugs
(a) Chemical name. 2-(4-Thiazolyl) benzimidazole. (b) Specifications. Conforms to N.F. XII. (c) Sponsor. See No. 050604 in §510.600(c) of this chapter. (d) Related tolerances. See §556.730 of this chapter. (e) Conditions of use. It is used as follows: (1) Cattle. In a bolus. (i) Amount. 3 grams per 100 pounds of body weight. (a) Indications for use. Control of infections of gastrointestinal roundworms (general Trichostrongylus spp., Haemonchus spp., Nematodirus spp., Ostertagia spp., and Oesophagostomum radiatum). (b) Limitations. As a single oral dose; may repeat once in 2 to 3 weeks; do not treat animals within 3 days of slaughter; milk taken from treated animals within 96 hours (8 milkings) after the latest treatment must not be used for food. (ii) Amount. 5 grams per 100 pounds of body weight. (a) Indications for use. Control of severe infections of gastrointestinal roundworms (genera Trichostrongylus spp., Haemonchus spp., Nematodirus spp., Ostertagia spp., and Oesophagostomum radiatum). Control of infections with Cooperia spp. (b) Limitations. As a single oral dose; as a drench or bolus; may repeat once in 2 to 3 weeks; do not treat animals within 3 days of slaughter; milk taken from treated animals within 96 hours (8 milkings) after the latest treatment must not be used for food. (2) Sheep and goats. In a bolus. (i) Amount. 2 grams per 100 pounds of body weight. (ii) Indications for use. Control of infections of gastrointestinal roundworms in sheep and goats (general Trichostrongylus spp., Haemonchus spp., Ostertagia spp., Cooperia spp., Nematodirus spp., Bunostomum spp., Strongyloides spp., Chabertia spp., and Oesophagostomum spp. ); also active from 3 hours to 3 days following treatment against ova and larvae passed by sheep (good activity against T. colubriformis and axei, Ostertagia spp., Bunostomum spp., Nematodirus spp., and Strongyloides spp.; less effective against Haemonchus contortus and Oesophagostomum spp. ). (iii) Limitations. As a single oral dose; do not treat animals within 30 days of slaughter; milk taken from treated animals within 96 hours (8 milkings) after the latest treatment must not be used for food; in severe infections in sheep, treatment should be repeated in 2 to 3 weeks. (3) Goats. In a bolus. (i) Amount. 3 grams per 100 pounds of body weight. (ii) Indications for use. Control of severe infections of gastrointestinal roundworms (genera Trichostrongylus spp., Haemonchus spp., Ostertagia spp., Cooperia spp., Nematodirus spp., Bunostomum spp., Strongyloides spp., Chabertia spp., and Oesophagostomum spp. ). (iii) Limitations. As a single oral dose; do not treat animals within 30 days of slaughter; milk taken from treated animals within 96 hours (8 milkings) after the latest treatment must not be used for food; treatment should be repeated in 2 to 3 weeks. [40 FR 13838, Mar. 27, 1975, as amended at 41 FR 9149, Mar. 3, 1976; 62 FR 63271, Nov. 28, 1997]
Title 21: Food and Drugs
PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS
§ 520.2380c Thiabendazole bolus.
