Section 520.1242f - Levamisol gel(a)Specifications. Each gram of gel contains 115 milligrams (11.5 percent) levamisol hydrochloride.(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.(c)Related tolerances. See § 556.350 of this chapter.(d)Conditions of use - (1)Cattle - (i)Amount. Eight milligrams of levamisole hydrochloride per kilogram of body weight, as a single oral dose.(ii)Indications for use. Anthelmintic effective against the following nematode infections: Stomach worms (Haemonchus, Trichostrongylus, Ostertagia), intestinal worms (Trichostrongylus, Cooperia, Nematodirus, Bunostomum, Oesophagostomum), and lungworms (Dictyocaulus).(iii)Limitations. Conditions of constant helminth exposure may require re-treatment within 2 to 4 weeks after the first treatment; do not administer to cattle within 6 days of slaughter for food; do not administer to dairy animals of breeding age; consult veterinarian before using in severely debilitated animals.(2)Breeding swine - (i)Amount. Eight milligrams per kilogram of body weight (3.6 milligrams per pound) as a single oral dose.(ii)Conditions of use. For treating breeding swine infected with the following nematodes: Large roundworms (Ascaris suum), nodular worms (Oesophagostomum spp.), lungworms (Metastrongylus spp.), intestinal threadworms (Strongyloides ransomi), and kidney worms (Stephanurus dentatus).(iii)Limitations. May require retreatment in 4 to 5 weeks. Do not use within 11 days of slaughter for food. Consult your veterinarian for assistance before using in severely debilitated animals and in the diagnosis, treatment, and control of parasitism.47 FR 22517, May 25, 1982; 47 FR 30242, July 13, 1982, as amended at 48 FR 11429, Mar. 18, 1983; 51 FR 29215, Aug. 15, 1986; 67 FR 63055 , Oct. 10, 2002; 78 FR 28823 , May 20, 2014