By intramuscular injection: 0.03-0.10 mg per kg bodyweight. Approximately equivalent to 0.15-0.5 ml of 10 mg/ml injection per 50 kg (approx. 1 cwt) bodyweight.
By intravenous injection: As for intramuscular, except that it is recommended the injection is made slowly.
Normally, single doses of acepromazine are administered. Long term use is not recommended. On the rare occasions that repeat dosing is required, the dosing interval should be 36-48 hours.