When your pet isn’t feeling well, it can be stressful not knowing the cause or how to help. Vomiting or nausea can bring everyone down quickly. Fortunately, an online veterinarian can help determine what’s wrong and guide you in getting your furry friend back to normal. There are many possible reasons why a dog may have an upset stomach or vomit. Below are five of the most common causes.
1. Infections from Viruses, Bacteria, or Parasites
Dogs can get stomach bugs just like people. These infections are often picked up at dog parks, daycare centers, boarding facilities, or even on routine walks through the neighborhood. Regular parasite prevention is crucial for protecting your dog’s digestive health. Talk to your veterinarian to make sure your pet is fully protected against intestinal parasites like Giardia, roundworms, and hookworms.
2. food allergies
Did you know that food allergies can also cause vomiting in dogs? The most common trigger is the protein source in their food, such as chicken, beef, or dairy. If you suspect a food allergy, your veterinarian can help identify the culprit and recommend an appropriate elimination diet or hypoallergenic formula. Online vets can also discuss whether this might be contributing to your dog’s upset stomach.
3. Dietary Indiscretion or Foreign Object Ingestion
Dogs are known for eating things they shouldn’t, whether it’s table scraps, trash, socks, or even small toys. Ingesting foreign material can cause vomiting, irritation, or even a life-threatening blockage that may require surgery. If your dog is especially curious or prone to scavenging, consider using a basket muzzle during walks or crating them when unsupervised to prevent accidents.
4. Sudden Changes in Diet
Even a well-intentioned switch in dog food can cause digestive upset if done too quickly. A dog’s stomach may react negatively when their food is changed abruptly without a gradual transition. To prevent this, mix the old and new food over the course of 7-10 days. If your dog continues to vomit or experience diarrhea after a diet change, it’s best to consult a vet, online or in person.
5. Side Effects from Medications
Medications prescribed for unrelated issues can sometimes lead to nausea or vomiting. Antibiotics and non-steroidal anti-inflammatory drugs (NSAIDs) are among the most common culprits. Giving these medications with food may reduce stomach irritation, but some pets may still react poorly. Always let your veterinarian know if your dog experiences side effects while on medication.

What should you do when your dog has an upset stomach?
A good first step is to offer a bland diet, such as boiled chicken or ground beef with white rice. You may also fast your dog for about 12 hours to allow the stomach to rest before reintroducing food. However, never give your dog any over-the-counter medications without first consulting a veterinarian; many human medications can be toxic to pets.
When Should You Contact a Veterinarian?
Don’t wait too long. Delaying care can lead to dehydration, worsening symptoms, and serious health risks. If your dog is repeatedly vomiting, unusually lethargic, refusing to eat, or has blood in their vomit, it’s time to seek professional help. Early intervention can make a big difference.
Can an online vet help?
Absolutely! Online veterinarians are a convenient and affordable way to receive expert advice about your pet’s upset stomach. They can help assess the situation, recommend next steps, and let you know whether an in-person visit is necessary. TelePAWS is available 24/7 to help support you and your furry family members with quality, compassionate care.
further information
What To Give A Dog For Upset Stomach: Remedies To Settle A Sick Tummy






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