FieldDxClosantelSheep dose, withdrawal and citation, from FieldDx’s free offline veterinary formulary.
What it’s for
Liver fluke (Fasciola hepatica), including immature stages from about 8 weeks old, and Haemonchus spp in sheep and cattle. Binds strongly to blood protein, so it persists in the body longer than oxyclozanide — which gives it greater activity against immature fluke, but a longer withholding period.
Dose · Sheep
Doses are shown as published, not averaged or extrapolated across sources. Enter this animal’s body weight in the interactive drug guide to calculate the amount.
Withdrawal
Meat withdrawalMilk withdrawal
A duration is stated for this drug, but it depends on the formulation, route and dose used. Open the full entry in the app for the exact wording before treating a food animal.
Source
MSD Veterinary Manual — Withholding Periods After Anthelmintic Treatment in Animals (accessed 2026-08-10)
Registered product datasheets (aggregated via veterinary product databases, accessed 2026-08-10)
FieldDx condenses and attributes; it never reproduces a source whole. Check the source line and page before dosing.