Levamisole resinate and famphur paste.

(a) Specifications. The drug is a paste containing 11.6 percent levamisole resinate (50 percent potency) and 23.6 percent famphur. (b) Sponsor. See 000061 in § 510.600(c) of this chapter. (c) Special considerations. Do not use any cholinesterase-inhibiting drugs, pesticides, insecticides, or chemicals on cattle simultaneously or within a few days before or after treatment with this product. (d) Related tolerances. See §§ 556.273 and 556.350 of this chapter. (e) Conditions of use in cattle —(1) Amount. 8 milligrams of levamisole hydrochloride (equivalent) and 30 milligrams of famphur activity per kilogram of body weight. (2) Indications for use. For treatment of cattle infected with the following parasites: Stomach worms ( Haemonchus, Trichostrongylus, Ostertagia ), intestinal worms ( Trichostrongylus, Cooperia, Nematodirus, Bunostomum, Oesophagostomum ), lungworms ( Dictyocaulus ), cattle grubs ( Hypoderma ), biting lice ( Bovicola ), and sucking lice ( Linognathus, Solenoptes ). (3) Limitations. Drug is not effective against lice eggs. Conditions of constant helminth and ectoparasitic exposure may require retreatment within 2 to 4 weeks after first treatment. Do not administer to cattle within 19 days of slaughter. Do not administer to dairy animals of breeding age. Do not use in calves less than 3 months old, or in debilitated animals. Do not treat Brahman bulls. Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism. [53 FR 23757, June 24, 1988, as amended at 54 FR 1353, Jan. 13, 1989; 57 FR 7652, Mar. 4, 1992; 62 FR 55160, Oct. 23, 1997; 62 FR 61625, Nov. 19, 1997; 78 FR 28823, May 20, 2014]