Code of Federal Regulations Title 21. Food and Drugs § 21.520.1242f Levamisol gel

(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.

(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.