Acepromazine Maleate Injectable
Acepromazine Maleate is an FDA-approved preparation containing Acepromazine Maleate, for veterinary use. Available by prescription.
Giving your pet an injection might feel intimidating at first, but with practice, it becomes routine. Follow these steps for safe and stress-free injections.
Get Your Supplies Ready
- Medication vial or pre-filled syringe
- Alcohol swabs
- Sterile syringe & needle (if not pre-filled)
- Sharps container for safe needle disposal
Drawing Up the Dose (if needed)
- Clean the vial top with an alcohol swab
- Attach needle to syringe
- Pull in air equal to the dose
- Insert needle into vial, push air in
- Draw out the correct dose
- Tap out air bubbles
Pick the Injection Site
- Subcutaneous (under the skin): Loose skin between shoulder blades or side
- Intramuscular (into muscle): As directed by your vet
Prep the Area
- Pinch a fold of skin to form a “tent” (for subcutaneous). Wipe with alcohol if recommended.
Inject the Medication
- Hold the syringe like a pencil
- Insert the needle into the base of the skin tent at a 45° angle
- Push the plunger slowly to inject
After the Injection
- Remove the needle smoothly
- Place it immediately in the sharps container (don’t recap)
- Pat the area and give your pet praise or a treat
Safety Tips
- Never reuse needles
- Always dispose of used needles properly
- Ask your vet for help if unsure
Veterinarians most commonly consider acepromazine as part of pre-anesthetic protocols, where sedation is a clinical objective before a procedure. It may also be discussed for patient handling and transport and some veterinarians have considered it in the context of noise aversion events such as thunderstorms or fireworks — though professional guidance on that application continues to evolve. Acepromazine acts by blocking dopamine receptors in the central nervous system. It also has activity at adrenergic, muscarinic and histamine receptors, which shapes its broader physiological profile. It is not an analgesic — it does not act on pain pathways — and veterinarians account for this distinction when designing any protocol in which it appears. Your veterinarian will determine whether acepromazine is appropriate for your pet based on species, weight, health status and the specific clinical context.
The actions described here reflect the product's FDA-approved labeling; your veterinarian determines the appropriate use for your animal.
Prescription only. Use only under the direction of a licensed veterinarian. This information is not a substitute for veterinary diagnosis, prescribing or monitoring.
Commonly observed effects include sedation, decreased blood pressure (hypotension) and a drop in body temperature (hypothermia). Some animals experience longer sedation than anticipated. In brachycephalic breeds and certain giant breeds, the physiological response to acepromazine may differ from what is seen in other patients — your veterinarian will weigh this when evaluating whether the medication is appropriate. Priapism (prolonged penile protrusion) has been observed in some male dogs following administration and warrants prompt veterinary attention. This medication is typically used with extra caution or avoided in patients with known cardiovascular compromise, a history of seizures or epilepsy, shock or severe dehydration. Acepromazine is also associated with interactions involving anesthetic agents and blood pressure medications, so a complete medication history is essential before use. Contact your veterinarian promptly if you observe any unexpected changes after acepromazine has been administered.
Yes. Acepromazine maleate is a prescription medication and can only be dispensed by a licensed pharmacy upon receipt of a valid prescription from a licensed veterinarian. Mixlab verifies authorization before dispensing any prescription medication.
Acepromazine is available as a commercial injectable, and Mixlab carries it as part of our full-service pharmacy. When a veterinarian determines that a compounded formulation — such as an oral or transmucosal preparation — better suits an individual patient's needs, Mixlab's compounding team can prepare that formulation with a valid prescription. The decision between a commercial and compounded product rests with the prescribing veterinarian.
Acepromazine maleate is a phenothiazine tranquilizer that veterinarians commonly consider for pre-anesthetic sedation, patient handling and certain stress-related situations such as noise events. Its use is determined by a licensed veterinarian based on the patient's individual needs, health history and the specific clinical context.
Acepromazine maleate is not an analgesic and does not act on pain pathways. Veterinarians who include it in a pre-anesthetic protocol typically pair it with analgesic medications suited to the patient's needs. If pain management is a concern for your pet, that conversation belongs with your veterinarian.
Some breeds, including Boxers, brachycephalic breeds and certain giant breeds, are associated with a heightened or atypical physiological response to acepromazine based on clinical observations. Veterinarians account for breed-specific factors when evaluating whether acepromazine is appropriate for a given patient. Your veterinarian is the right person to assess your pet's individual profile.
