Albendazole dosage for animals
Albendazole is dosed by body weight, so an accurate weight and the right product concentration are everything. Use the calculator, then check your figure against the reference table and the product label.
Dosage Calculator
ESTIMATE DOSE & VOLUME · ANIMAL USE ONLY
Reference: —. Estimate only — confirm every dose against the product label and your veterinarian.
Reference dose rates by species
The figures below reflect commonly published label doses using an 11.36% oral suspension (113.6 mg/mL). Volumes are per 100 lb of body weight and are rounded.
| Species | Typical rate | Volume (11.36%) | Regulatory status |
|---|---|---|---|
| Cattle (beef) | 10 mg/kg | ~4.0 mL / 100 lb | FDA-approved |
| Sheep | 7.5 mg/kg | ~3.0 mL / 100 lb | FDA-approved |
| Goats | 10 mg/kg | ~4.0 mL / 100 lb | Extra-label · vet-directed |
| Horses | ~8.8 mg/kg | ~3.5 mL / 100 lb | Per product label |
| Alpacas / Llamas | ~10 mg/kg | ~4.0 mL / 100 lb | Extra-label · vet-directed |
Some parasites — adult liver flukes in particular — may call for a higher rate than routine worming. Only increase a dose on veterinary advice.
How to read the label and get the volume right
Two numbers turn a milligram dose into a real syringe volume:
1. The dose rate (mg/kg)
This is how many milligrams of albendazole each kilogram of animal needs. Multiply it by the animal’s weight in kilograms to get the total dose in milligrams.
2. The concentration (mg/mL)
This tells you how concentrated the liquid is. An 11.36% suspension contains 113.6 mg in every millilitre. Divide the total dose by this number to get the volume to draw into the syringe or drench gun.
Weigh, don’t guess. Estimating weight by eye is the most common dosing error. Under-dosing lets parasites survive and builds resistance across your whole herd; over-dosing wastes product and raises toxicity risk.
Withdrawal times
The withdrawal period is the time that must pass between the last dose and slaughter or milk sale. Using treated meat or milk too early can leave illegal residues. Always take the exact figure from your product label; extra-label use extends these periods.
| Species / use | Meat (reference) | Milk |
|---|---|---|
| Beef cattle | ~27 days | Not for dairy cattle 20 months+ |
| Sheep | ~7 days | Confirm with label / vet |
| Goats & extra-label | Extended — vet / FARAD directed | Extended — vet / FARAD directed |
For extra-label withdrawal intervals in the US, your veterinarian can consult FARAD (the Food Animal Residue Avoidance Databank). Figures vary by country.
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