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Diarrhea and Vomiting: First Aid

EmergencyFirst Aid & Emergency1 min read
Roger Gfeller, DVM, DACVECC ; Michael Thomas, DVM ; Isaac Mayo ; The VIN Emergency Medicine Consultants, DVM, DACVECC ; Michael Thomas, DVM ; Isaac Mayo ; The VIN Emergency Medicine Consultants
Published: December 31, 1994 | Last reviewed: August 16, 2023

Diarrhea is the frequent evacuation of watery stools. Vomiting is the forceful expulsion of stomach contents through the mouth.

What to Do

  • Remove all food and water.

  • Check for signs of dehydration .

  • If diarrhea and/or vomiting continues or the pet acts ill, seek veterinary attention.

  • If no vomiting occurs for 6 to 8 hours, begin to frequently give small amounts of clear liquids (water, Gatorade, Pedialyte, or other electrolyte solution). A rule of thumb is to give 1 teaspoon per pound of body weight every 2 or 3 hours throughout the day and night. If your pet does not vomit the fluid, the following day offer small frequent meals of boiled hamburger and rice or boiled chicken and rice.

  • A rule of thumb is to give 1 teaspoon per pound of body weight every 2 or 3 hours throughout the day and night.

  • If your pet does not vomit the fluid, the following day offer small frequent meals of boiled hamburger and rice or boiled chicken and rice.

  • If your pet does not want to eat, starts to vomit, or continues to have diarrhea, see a veterinarian right away.

  • Isolate the sick pet from other pets.

Diarrhea and vomiting can quickly lead to serious fluid loss and electrolyte imbalance, especially in very young or old animals, and those with certain health issues. Severely dehydrated animals may need to be hospitalized and receive IV fluids to recover.

What NOT to Do

  • Do not administer any over-the-counter or prescription medications to your pet without talking to a veterinarian first.

  • Do not allow the pet to eat or drink anything until there has been no vomiting for 6 to 8 hours.

Vomiting and diarrhea are associated with a host of problems that are referred to collectively as gastroenteritis. Some cases are quite severe (e.g., poisoning), and some are not (e.g., dietary indiscretion). If fever is present, infection may be a cause. Most infections that cause diarrhea and vomiting are contagious, so it is wise to assume that other pets might be vulnerable if they are exposed.

If your pet is not feeling well and has vomiting and/or diarrhea, see a veterinarian.

Usage Note

This is for reference and paraphrasing. Do not republish source text verbatim.

Clinics specializing in this condition

Thonglor Pet Hospital

Open 24 hrs

Specializes in: emergencies

Hours: Open 24 hours

55 Sukhumvit 55 (Thonglor), Khlong Tan Nuea, Watthana, Bangkok 10110

On Nut Emergency Vet Hospital

Open 24 hrs

Specializes in: emergencies

Hours: Open 24 hours

456 Sukhumvit 77 Road, Suan Luang, Suan Luang, Bangkok 10250

RakMaew Animal Hospital

Specializes in: gastrointestinal conditions

Hours: Daily 8:00 AM - 8:00 PM

123 Lat Phrao Road, Chom Phon, Chatuchak, Bangkok 10900