Apomorphine for Dogs: Veterinary Emetic for Poisoning

See your vet immediately if your dog may have eaten a toxin, medication, caustic chemical, sharp object, or unknown substance. Apomorphine is a veterinary medication used to induce vomiting in dogs in carefully selected situations. It is not a home remedy, and whether vomiting is appropriate depends on what was eaten, how long ago it happened, and how your dog is acting.

Do not try to make your dog vomit unless your vet or a pet poison expert tells you to do so. Vomiting can be dangerous after ingestion of corrosive products, petroleum-based substances, or when a dog is weak, sedated, having tremors, or having seizures. Your vet may recommend vomiting, activated charcoal, monitoring, hospitalization, or a different plan based on the exposure.

Apomorphine is a fast-acting veterinary emetic, meaning it is used to make dogs vomit after certain poisonings. It works mainly by stimulating dopamine receptors in the brain's chemoreceptor trigger zone, which activates the vomiting reflex. In practice, it is one of the most reliable ways for your vet to induce vomiting in dogs after a recent ingestion.

This medication is used in the clinic, not as a routine at-home treatment. Dogs often vomit within minutes after IV dosing, and many clinics also use the conjunctival route, where a small tablet is placed in the lower eyelid and removed after vomiting starts. That speed can matter when a dog has eaten something toxic that is still in the stomach.

Even so, apomorphine is not the right answer for every poisoning. Some toxins are absorbed too quickly, some exposures become more dangerous if vomited back up, and some dogs are not safe candidates for emesis. Your vet decides whether the benefits outweigh the risks based on the substance, timing, dose, and your dog's neurologic and breathing status.

Apomorphine is used almost exclusively to induce vomiting in dogs after a recent ingestion of a potentially harmful substance. Common examples include chocolate, some human medications, some rodenticides, raisins or grapes, nicotine products, and certain toxic plants. In many cases, it is most helpful when the exposure was recent and the dog is still bright enough to protect the airway.

Your vet may decide not to use apomorphine if your dog swallowed a caustic cleaner, strong acid or alkali, petroleum product, sharp object, or something that could foam or be easily aspirated. It is also avoided or used very cautiously in dogs that are already very sleepy, weak, having tremors, having seizures, or struggling to breathe.

Timing matters. Emesis is usually most useful soon after ingestion, often within about 1 to 2 hours, though your vet may still consider it outside that window depending on what was eaten and whether stomach emptying may be delayed. If vomiting is not appropriate, your vet may recommend activated charcoal, imaging, IV fluids, bloodwork, antidotes, or hospitalization instead.

Apomorphine is given by your vet. Published veterinary references list doses such as 0.02 mg/kg IV, 0.03 to 0.1 mg/kg SC, and 0.25 mg in the conjunctival sac for dogs. Some toxicology references also describe 0.03 mg/kg IV or 0.04 mg/kg IM in specific poisoning situations. The exact route and dose depend on the clinic, the urgency of the case, and your dog's condition.

IV dosing is often chosen when rapid, predictable vomiting is needed. The conjunctival route can also work well, especially when a clinic uses a tablet placed under the lower eyelid. If that route is used, the tablet is typically removed once vomiting begins to reduce prolonged effects.

Apomorphine should not be given orally at home for poisoning management. Dogs need veterinary supervision because they may vomit repeatedly, become sedated, or need follow-up care such as anti-nausea medication, activated charcoal, oxygen support, or monitoring for aspiration.

The intended effect of apomorphine is vomiting, but some dogs vomit more than desired or continue retching after the stomach is empty. Drooling, lip-smacking, restlessness, and temporary tiredness can also happen. Dogs treated by the conjunctival route may have tearing, squinting, or mild eye irritation for a short time.

Less common but more important concerns include prolonged sedation, weakness, and aspiration of vomit into the lungs. Aspiration risk is one reason your vet may avoid emesis in dogs that are neurologically abnormal or cannot protect their airway. If vomiting continues longer than expected, your vet may use anti-nausea medication or other supportive care.

Apomorphine's effects can sometimes be reversed or reduced with naloxone in veterinary settings. That does not mean pet parents should try to manage side effects at home. After treatment, call your vet right away if your dog has repeated vomiting, trouble breathing, marked lethargy, collapse, or coughing after coming home.

Apomorphine may work less well if your dog recently received anti-nausea medication, especially drugs that affect vomiting pathways in the brain. Maropitant and ondansetron are common examples your vet will want to know about before deciding whether emesis is likely to succeed.

Sedatives, opioids, and other drugs that depress the central nervous system can increase the risk of excessive sedation or make vomiting less safe. That matters in emergency poisoning cases, because a dog that is too sleepy may be at higher risk of aspiration.

Tell your vet about everything your dog may have had in the last 24 hours, including prescription medications, supplements, edible products, recreational drugs, and anything another pet in the home takes. Small details can change whether apomorphine is a good option or whether another decontamination plan is safer.