Causes & Treatment of Vomiting in Dogs

Vomiting or throwing up is a common side effect when a dog is sick. It could apply to almost every illness in a dog. As a rule, vomiting should be taken more seriously than say diarrhea or loose-motions because the underlying reasons can be varied and more complex. 

Is your dog vomiting: what does it mean?

Often, the signs that occur before a dog begins vomiting is when its abdominal muscles contract, and it starts salivating excessively. It is painful to vomit, so the dog will not be comfortable. The dog will be anxious, stressed, and restless. Pay attention to the signs. If your dog’s vomiting is a rare occurrence, then it’s likely that there is something it ate which does not agree with it. Take cognizance of that and avoid feeding that food to your dog. If the dog is vomiting continuously or regularly, then it could be a more serious problem.

The causes behind vomiting

Vomiting is when the stomach rejects partially undigested food. However, before the dog actually does vomit you might notice symptoms such as drooling, retching or contractions. While there are many causes, some common ones for dogs vomiting include:

  • Bilious vomiting symptom
  • Motion sickness (after a long car journey)
  • Eating foreign substances
  • Eating too quickly
  • Being overly active soon after a meal

In most such cases the dog will feel relief after having thrown up or will seek green grass to self-induce vomiting (it is safe). In case the dog has thrown up because it has not digested food it may try to eat the vomited food back – while repulsive to you, it is common and safe for the dog. Remember: Throwing up once is okay since it is trying to rid itself of a substance that is in their body. This is normal. However, if the dog continuously throws up then contact your vet immediately.

While you may address the symptom (vomiting) immediately an examination to determine the underlying cause and addressing this cause with your vet is essential. When your dog vomits and even after throwing up the food does not feel any relief, or vomits in succession even when the stomach is empty, it is a sign of something worse. A dog vomiting foam or bile is also a dangerous sign and signals the need for immediate intervention.

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Why does this happen?

Kennel Cough

Kennel-cough is a highly contagious respiratory disease among dogs (canine tracheobronchitis). This disease is easily transmitted from one dog to another through mere contact in a contaminated area. Besides symptoms such as nasal discharge, eye drainage, vomiting white foam is also a result of this disease. Contact your Vet for a complete diagnosis and treatment. Once the vet has completely diagnosed this disease, treatment will lead to a complete recovery. An antibiotic course will address kennel-cough. Search on the search bar above for kennel cough treatment


This is a critical and life-threatening condition. During bloat, a dog’s stomach becomes full of gas, liquid or air. This can create discomfort and pressure on nearby organs. The dog’s stomach gets twisted and does not allow it to expel this gas or belch. In such cases, blood circulation to the heart is restricted and the dog could go into shock. Get your dog immediately to a vet. This is an emergency. You can get adequate dog vomiting treatment from a veterinarian.

Inflammatory Bowel Disease (IBD)

This happens when a dog’s stomach and/or intestines become inflamed due to cell inflammation.  As a result, it affects the digestion of the dog and causes extreme vomiting and diarrhoea. See your vet immediately.


This occurrence happens when a dog’s pancreas is swollen and becomes inflamed. As a result, the stomach cannot process /digest the consumed food. See your vet immediately. Search on the search bar above for pancreatitis treatment.

Reflux Gastritis

Observe the time of day when your dog is vomiting. If this is most often in the morning then your dog could be suffering from Reflux Gastritis—a condition caused when the stomach is irritated by acid (usually on an empty stomach). This condition could also cause the dog to be in severe pain. See your vet immediately.

Kidney disease

Vomiting white foam apart from being physically weak and disoriented indicates that your dog could be suffering from kidney disease. See your vet immediately for a physical examination of your dog. Search on the search bar above for renal treatment


This is a viral infection transmitted through oral contact with infected faeces. This is mostly found in puppies it can also infect any dog. The infection shows up normally a week to 10 days after exposure to a contaminated source. Other symptoms of this disease include fever, bloody diarrhoea, and lethargy. There is no cure for Parvovirus. Any treatment will keep the dog comfortable and lessen the symptoms. Search on the search bar above for parvo treatment


Heatstroke is a common cause of vomiting. Unbearably high temperatures often cause dehydration, nausea, and regurgitation of food. It is imperative to always keep cool or cold water handy in such a situation in order to prevent occurrences of heat stroke. Dogs that start to feel the effects of heat in the middle of summer are likely to start panting uncontrollably, becoming lethargic and slow, and eventually having a stroke.

Car sickness

Car sickness, or motion sickness, is common for both humans and dogs. It is useful to keep a dog vomiting tablet handy in case you are traveling long distances with a dog in the car. Both a dog and a human’s body is not evolved to handle the speeds a car can travel – and it often results in car sickness that could cause vomiting more often than not.

Ingestion of foreign object/choking

Dogs love to play with toys, and young, teething dogs are likely to try and bite anything it can get its hands on. This is the time to be extra aware of keeping small and dangerous objects around the house. Choking on a foreign object is likely to not agree with the dog. This in turn will result in sudden vomiting that may or may not bring the foreign object out. It is the dog’s body’s way of rejecting something that does not agree with it.

Metabolic conditions

When the enzymes in a dog do not adequately break down nutrients and disperse it to the rest of the body, it could lead to severe health issues like diabetes, and so on. If the nutrients aren’t breaking down, or if digestion is an issue, then the dog might react by vomiting out these nutrients and “rejecting” it. If your dog accidentally eats a plant during your daily walks, and that plant hinders the metabolic breakdown of enzymes, it could lead to severe complications

Vet Diagnosis: what to expect?

If your dog is vomiting suddenly but has a history of good health, then it is important to visit the dog’s veterinarian for a diagnosis. Even a little amount of vomiting could be a dangerous thing. Your dog’s veterinarian will prescribe a tablet for dog vomiting, so that the nausea is taken care of. If the vet suspects something more serious, he or she will suggest that diagnostic tests be done to check the dog’s glucose levels and so on. Blood and urine tests are common during this process. Ultrasounds and X-rays are important to check your dog’s abdominal health. Vomiting could be a sign of abdominal cancer or a growth in the abdominal region – and you might be able to spot the tumour in time with a proper veterinary examination.

What can you do to relieve nausea in your dog?

There are drugs available that curb nausea and help with vomiting. Ask your veterinarian to prescribe one as nausea is uncomfortable, and your dog could be in pain trying to vomit (due to the stress on its abdominal muscles). As a pet parent, always ensure that there is water available for your dog, as dehydration is a very common factor in inducing vomiting.

Your dog’s veterinarian might work with you to change your dog’s diet in order to help this problem. You might have to avoid feeding your dog for a day or two as per a recommendation by the vet.

Treatment for continuous vomiting in dogs

Most of the key reasons for vomiting white foam have been explained in the section before this. Before you see the vet, ensure that you have noted down any other symptoms that the dog has shown at the time of vomiting. Any and more information will help the Vet with a complete diagnosis besides a series of tests that it will perform on the dog. The orals/ injectibles that you will need to have to address vomiting depend on how aggressive the vomiting is:

Oral antacids in syrup base or tablet form

Such as Digene or Mucain that can be given to the dog using a 5/10ml syringe – squirting directly into the mouth at 5ml for 20kg. This can be used 4-5 times a day. This works well if there mild indigestion or acidity etc.

Ranitidine (common brand Rantac) for acidity, heartburn, stomach ulcers

It is available as a 25mg/ml in 2ml ampules or 150mg tablets. 2ml/ 40kg bodyweight or 150mg/40kg bodyweight oral is an adequate dose. Use oral dose

Ondansetron (common brand Emset) for nausea/ vomiting

Emeset available in 4mg tablets and 2ml ampules. In case you can get the dog to take in tablet great, but in most cases with continued vomiting, it will throw up the tablet, because of that an injection works much better. A 2ml ampule can be given to a 40kg up to 4 times a day.

Metoclopramide (common brand Perinorm) for nausea, vomiting, heartburn

Available as 10mg tablet and 2 ml ampule. This can be given typically together with Ondansetron for best action and injectible dose similar to Ondansetron.

In case the dog is able to keep it’s stomach contents after 1 dose continues with a combination of the 4 oral medications.

Frequently Asked Questions (FAQ)

1. When should you be concerned about your dog throwing up?

When your dog throws up multiple times in a day or more than a day, then you should be concerned. In such cases, check your dog’s vomit and look for any foreign element that might have triggered the infection. If the dog exhibits symptoms of diarrhea, loss of appetite, abdominal pain etc, consult your vet immediately for a dog vomiting treatment. 

2.What can you give a dog for an upset stomach and vomiting?

Usually, you should withhold any food consumption from the dog till you know the reason for vomiting. After an hour or two, start by introducing small amounts of water and if the dog can keep it down, then feed him soft foods like steamed rice and boiled chicken breast. Ask your vet for any medicine that prevent vomitting in dogs that will help with the situation.  

3. How can I soothe my dog after vomiting?

Vomiting is a painful process be it for humans or canines. It is important to take care of your dog like a baby post vomiting. Offer plenty of water and bland foods in small quantities and check with your veterinarian for any medication helpful in speeding the recovery process. 

4. Can I give Digene to my dog?

Usually, it is not recommended to give human medicines to dogs but Digene and Mucaine can be given in small quantities in syrup base or tablet form. Digene for dogs is helpful in relieving them of vomiting symptoms and can cure mild indigestion and acidity.  The best would be to keep dog antacids like Digyton Drops handy at home.

5. What medication can I give my dog for vomiting?

Ranitidine (from Rantac) is one of the commonly used dogs vomiting medicines to treat heartburn and stomach ulcers. Apart from that, you can also give your dogs Ondansetron (common brand Emset) to cure nausea and vomiting. However, be sure to administer these in small doses and in accordance with your veterinarian’s advice.

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The information contained in VOSD Vet Advice™ is not intended nor implied to be a substitute for professional medical action which is provided by your vet. You assume full responsibility for how you choose to use this information. For any emergency situation related to a dog’s health, please visit the nearest veterinary clinic.