TABLE 6.8.

Anthelmintics Approved for Lactating Dairy Cattle (Assembled from Manufacturers’ Labels)

Drug	Dose	Withdrawal Period for Slaughter and Milk (days)	Spectrum
Eprinomectin (pour-on as Ivomec Eprinex)	500 μg/kg topically	Meat = 0 Milk = 0	GI nematodes, including hypobiotic Ostertagia L4, lungworms, grubs (Hypoderma), sucking and biting lice, mites, and horn flies Effective when applied to wet cattle
Fenbendazole	5 mg/kg PO	Meat: 8-13 (depending on product) Milk: 0	GI nematodes (adult), lungworms
Morantel tartrate	0.44 g/100 lb PO	Meat = 14 Milk = 0	GI nematodes (adult)
Moxidectin (pour-on)	0.5 mg/kg topically	Meat = 0 Milk = 0	GI nematodes, including hypobiotic Ostertagia L4, lungworms, grubs (Hypoderma), sucking and biting lice, mites, and horn flies

GI, Gastrointestinal; PO, oral.