Dog Diarrhea and Vomiting: Safe Home Care Steps
By Dr. Zubair Khalid, DVM, MS, PhD ·
Key Takeaways
- Urgent veterinary intervention is critical for specific clinical signs: Immediate emergency veterinary care is mandated for repeated vomiting (over 3 times in a few hours or after every drink), presence of blood in vomit or stool (bright red or coffee-ground/tarry appearance), abdominal pain or distension, unproductive retching, collapse, seizures, or suspected toxic ingestion.
- Home care is strictly for mild, stable cases in adult dogs: This approach is only appropriate for adult dogs experiencing one or two episodes of vomiting and diarrhea, who remain alert, are drinking water and keeping it down, and have pink, moist gums. Puppies, senior dogs, or those with pre-existing health conditions require veterinary consultation for any gastrointestinal upset.
- A short fasting period followed by a bland diet is the cornerstone of home management: Withholding food for 12-24 hours allows the gastrointestinal tract to rest, while offering small, frequent meals of boiled chicken and white rice or plain pumpkin aids recovery. Gradual reintroduction of the regular diet over 2-3 days is essential to prevent relapse.
- Dehydration is the primary risk of vomiting and diarrhea, necessitating careful monitoring: Assessment of skin turgor, gum moisture, and capillary refill time are crucial home indicators of hydration status. Failure to keep water down or signs of dehydration warrant immediate veterinary attention, as intravenous fluid therapy is the definitive treatment.
- Human medications are contraindicated and potentially toxic: Never administer human anti-diarrheal or anti-emetic drugs (e.g., loperamide, bismuth subsalicylate) without explicit veterinary guidance, as incorrect dosing or drug choice can lead to severe toxicity or mask underlying serious conditions.
- Preventative measures focus on dietary control and parasite prevention: Securely storing trash, supervising dogs during walks to prevent ingestion of inappropriate materials, maintaining a consistent diet with gradual transitions, and ensuring current vaccinations and parasite control are vital for reducing the incidence of gastrointestinal upset.
If your dog is throwing up and has diarrhea, your first job is to figure out how sick they actually are. Many mild cases clear up on their own within 24 to 48 hours, but some cases are true emergencies. Do not start any home treatment until you have checked for the danger signs below. If you see blood in the vomit or stool, if your dog cannot keep water down, or if they show signs of severe pain, go to an emergency veterinarian now. This guide covers safe home care for mild illness only, and it cannot replace a hands-on examination when the cause is unknown.
Is This an Emergency?
Use this table to sort your dog's condition. When in doubt, call your veterinarian. It is always better to make a phone call than to wait.
{
"type": "triage",
"title": "Urgency triage by severity of signs",
"tiers": [
{
"tier": "danger",
"label": "Go to an emergency vet now",
"signs": [
"Repeated vomiting, meaning more than 3 times in a few hours, or vomiting after every drink of water",
"Blood in vomit (bright red or looks like coffee grounds) or in diarrhea (bright red or black and tarry)",
"A swollen, hard, or painful belly",
"Your dog is retching without bringing anything up"
],
"action": [
"Do not wait",
"Do not try home care",
"Drive to the nearest open emergency clinic"
]
},
{
"tier": "warn",
"label": "Book a same-day appointment",
"signs": [
"Vomiting and diarrhea that last longer than 12 hours in an adult dog, or longer than 6 hours in a puppy or a senior dog",
"Your dog is lethargic, meaning they are unusually tired and do not want to move or play",
"They refuse all food and water for more than 12 hours",
"You see worms in the stool"
],
"action": [
"Call your regular vet as soon as they open",
"Describe how many times your dog has vomited or had diarrhea and when it started",
"Follow their advice about whether to come in today"
]
},
{
"tier": "safe",
"label": "Watch at home for up to 24 hours",
"signs": [
"Your adult dog has had one or two episodes of vomiting and one or two episodes of diarrhea, but is otherwise acting normal",
"They are drinking water and keeping it down",
"They are alert, walking normally, and interested in their surroundings",
"Their gums are pink and moist"
],
"action": [
"Start the home care steps below",
"If there is no improvement within 24 hours, or if any sign gets worse, call your vet"
]
}
]
}| Urgency Level | Signs You Can See or Count | What to Do |
|---|---|---|
| Go to an emergency vet now | Repeated vomiting, meaning more than 3 times in a few hours, or vomiting after every drink of water. Blood in vomit (bright red or looks like coffee grounds) or in diarrhea (bright red or black and tarry). A swollen, hard, or painful belly. Your dog is retching without bringing anything up. Your dog collapses, cannot stand, or has a seizure. You suspect they ate something toxic, like chocolate, grapes, or a human medicine. | Do not wait. Do not try home care. Drive to the nearest open emergency clinic. If your dog is collapsed or having trouble breathing, call the clinic on the way so they can prepare. |
| Book a same-day appointment | Vomiting and diarrhea that last longer than 12 hours in an adult dog, or longer than 6 hours in a puppy or a senior dog. Your dog is lethargic, meaning they are unusually tired and do not want to move or play. They refuse all food and water for more than 12 hours. You see worms in the stool. Your dog has a known health condition like diabetes or kidney disease. Your dog is very young, under 6 months, or very old. | Call your regular vet as soon as they open. Describe how many times your dog has vomited or had diarrhea and when it started. Follow their advice about whether to come in today. |
| Watch at home for up to 24 hours | Your adult dog has had one or two episodes of vomiting and one or two episodes of diarrhea, but is otherwise acting normal. They are drinking water and keeping it down. They are alert, walking normally, and interested in their surroundings. Their gums are pink and moist. They have no blood in vomit or stool. They have no known health problems. | Start the home care steps below. If there is no improvement within 24 hours, or if any sign gets worse, call your vet. |
What Is Most Likely Going On
The most common cause of a sudden bout of vomiting and diarrhea in an otherwise healthy dog is dietary indiscretion. That is a medical term for eating something they should not have. Dogs get into garbage, eat table scraps, drink from puddles, or chew on things that upset their stomach. The digestive tract reacts by trying to expel the irritant, which produces vomiting and loose stool. MSD Veterinary Manual Digestive Disorders of Dogs and Cats explains that most short-lived gastrointestinal upsets in dogs resolve on their own once the offending material passes through the system.
A sudden change in diet can also cause this. If you switched your dog's food from one brand to another without a gradual transition, their intestines may not handle it well. Stress can play a part too. A boarding stay, a move, or a new pet in the house can trigger loose stool and occasional vomiting in sensitive dogs.
What Else It Could Be
Several other conditions produce the same signs, and you cannot tell them apart without a veterinarian. Intestinal parasites, such as roundworms or giardia, cause vomiting and diarrhea, especially in puppies. A bacterial infection from contaminated food or water can do the same. Viral infections, including parvovirus in unvaccinated dogs, are serious and require immediate treatment. AAHA Pet Owner Resources notes that routine preventive care and vaccination are the best defense against several of these infectious causes.
More serious problems include a foreign body, meaning your dog swallowed something that is stuck in their stomach or intestines. This is a blockage and it is life-threatening. Pancreatitis, an inflammation of the pancreas, causes vomiting, belly pain, and diarrhea, and it often follows a fatty meal. In older dogs, kidney or liver disease can first show up as digestive upset. None of these can be diagnosed or safely treated at home. If your dog does not improve quickly, or if they have any of the same-day signs listed above, an examination is necessary.
The First Step: A Short Fast
For a mild case in an adult dog, a fast gives the stomach and intestines time to settle. Withhold food for 12 to 24 hours. Do not withhold water. Your dog needs fluids, so keep fresh water available at all times. If your dog is gulping water and then vomiting it back up, offer very small amounts, a few tablespoons at a time, every 30 minutes. Puppies under 6 months and dogs with health conditions should not fast without veterinary approval, because their blood sugar can drop dangerously low.
After the fast, if your dog has not vomited for several hours and is acting alert, you can begin offering a bland diet. Boiled white rice mixed with boiled, skinless chicken breast or plain canned pumpkin works well. Feed small meals, about a quarter of the usual portion, every 3 to 4 hours. Do not add salt, oil, butter, or seasonings. If your dog keeps this down for 24 hours, you can slowly mix in their regular food over the next 2 to 3 days.
Hydration Is the Priority
The biggest danger from vomiting and diarrhea is dehydration, meaning your dog is losing more fluid than they take in. You can check for dehydration at home. Gently lift the skin between your dog's shoulder blades and let it go. In a well-hydrated dog, the skin snaps back instantly. If it returns slowly, your dog is dehydrated. Press a finger gently on their gums. They should be pink and moist, not pale, dry, or sticky. Capillary refill time is another check. Press on the gum until it turns white, then release and count how many seconds it takes to turn pink again. It should take less than 2 seconds.
If your dog is drinking and keeping water down, that is a good sign. Do not give milk, broth with onion or garlic, or any human electrolyte drinks unless your veterinarian tells you to. Some of these contain ingredients that are toxic to dogs. If your dog will not drink, or if they show signs of dehydration, they need veterinary care. MSD Veterinary Manual Pet Owner Version stresses that fluid therapy from a veterinarian is the definitive treatment for dehydration, and it cannot be replaced by home remedies.
When Home Care Is Not Enough
Home care is only for mild, short-lived illness in otherwise healthy dogs. If your dog has not improved after 24 hours, if they develop any of the emergency signs, or if you are unsure about the cause, stop home treatment and call your vet. Do not give your dog any human medication for diarrhea or vomiting. Many human drugs, including common pain relievers, are toxic to dogs. Any medication, including dewormers, must be prescribed by a veterinarian who has examined your dog and determined the correct dose for their weight and condition. Guessing a dose can cause serious harm. Trust your instincts. You know your dog better than anyone, and seeking help early is always the safer choice.
The Bland Diet: What to Feed and How
Once the fast is over, usually after 12 to 24 hours, you can start offering small amounts of a bland diet. The goal is to give the digestive tract easy-to-process food that is unlikely to trigger more vomiting.
Boiled, skinless, boneless chicken breast and plain white rice are the standard choice. Boil the chicken until fully cooked, shred it finely, and mix it with well-cooked rice. Do not add salt, oil, butter, or any seasoning. Another option is plain boiled white potato without the skin, or low-fat cottage cheese if your dog tolerates dairy. Start with a very small portion, about a tablespoon for a small dog and up to a quarter cup for a large dog.
Feed this small meal and wait. If your dog keeps it down for two hours, offer another small portion. Over the next two days, gradually increase the amount and reduce the frequency, moving from four or five tiny meals a day to three normal-sized meals. If vomiting returns at any point, stop food again and contact your veterinarian.
After 48 hours of steady improvement, you can begin mixing the bland diet with your dog's regular food. Start with 25 percent regular food and 75 percent bland, then shift to half and half, then to 75 percent regular. A full transition over two to three days helps prevent a relapse. If your dog has a known food allergy or a chronic condition like pancreatitis, do not start a bland diet without asking your veterinarian first.
What Not to Do at Home
Some well-meaning actions can make your dog worse. Never give human anti-diarrhea or anti-nausea medications. Drugs like loperamide, bismuth subsalicylate, and ondansetron can be toxic to dogs or can mask a serious problem. Dosing for dogs is not the same as for people, and only a veterinarian can determine if any medication is safe and what the correct dose would be.
Do not give milk, yogurt, or other dairy products unless your veterinarian specifically recommends them. Many adult dogs are lactose intolerant, and dairy can worsen diarrhea. Do not offer bones, raw meat, or fatty table scraps. These can cause pancreatitis, a painful inflammation of the pancreas, or can splinter and block the intestines.
Do not force your dog to drink water. If your dog is vomiting repeatedly, forcing fluids can cause aspiration, where liquid enters the lungs. Instead, offer small amounts frequently, as described earlier. Do not use a syringe to squirt water into the back of the throat.
Do not wait out signs that are getting worse. Home care is only for mild, stable cases. If your dog's condition declines at any point, stop home treatment and seek veterinary care.
What to Measure and Write Down
Before you call a veterinarian, gather specific information. This helps the vet give you accurate advice and helps you decide if a visit is needed. Write down the following:
| What to Track | How to Measure It | Why It Matters |
|---|---|---|
| Vomiting frequency | Count each episode in a one-hour window | More than 2 or 3 times per hour is concerning |
| Diarrhea frequency | Count each episode in a 12-hour period | Frequent watery stools cause rapid fluid loss |
| Stool appearance | Note color, consistency, and whether blood is present | Black, tarry stool or bright red blood needs urgent care |
| Water intake | Estimate how many laps or ounces your dog drinks per hour | Refusing water for over 12 hours is a red flag |
| Gum color | Lift the lip and look at the gums | Pale, white, or blue-gray gums signal poor circulation |
| Resting breathing rate | Count breaths per minute while your dog sleeps | Over 30 breaths per minute at rest is abnormal |
| Energy level | Compare to your dog's normal behavior | Lethargy that worsens over hours is serious |
Take a photo of any vomit or stool that contains blood or a foreign object. This gives the vet concrete evidence. Also note when symptoms started, what your dog ate in the last 48 hours, and whether your dog has any chronic conditions or medications.
A Home-Care Decision Tree
Use this timeline to guide your choices. It assumes your dog has no emergency signs like bloat, poisoning, seizures, or difficulty breathing. If any of those are present, skip this chart and go to an emergency clinic immediately.
| Time Since Symptoms Started | What You Should Do | When to Escalate |
|---|---|---|
| 0 to 6 hours | Start the fast. Offer small amounts of water every 30 minutes. | Escalate if vomiting is continuous, if the abdomen looks swollen, or if your dog is retching without producing anything |
| 6 to 12 hours | Continue fasting. Monitor gum color, energy, and breathing. | Escalate if your dog cannot keep water down, if gums turn pale, or if diarrhea contains large amounts of blood |
| 12 to 24 hours | If vomiting has stopped, begin the bland diet with tiny meals. | Escalate if vomiting resumes, if diarrhea becomes more frequent, or if your dog becomes weak or collapses |
| 24 to 48 hours | Continue bland diet. Watch for improvement in stool and energy. | Escalate if there is no improvement after 48 hours, if your dog refuses all food, or if new signs appear |
| 48 to 72 hours | Transition back to regular food if symptoms have resolved. | Escalate if symptoms return during the transition |
What a Veterinary Visit Usually Involves
When you bring your dog in, the veterinarian will start with a physical examination. They will feel the abdomen to check for pain, masses, or blockages. They will listen to the heart and lungs, take a temperature, and check hydration by pinching the skin and looking at the gums. They will ask about your dog's history, diet, and the timeline of symptoms.
Depending on the findings, the vet may recommend tests. Fecal testing checks for parasites like giardia or worms. Bloodwork looks at organ function, electrolyte balance, and signs of infection or pancreatitis. X-rays or ultrasound can detect foreign objects, blockages, or intestinal thickening. These tests are not always needed for a mild case, but they become important if symptoms persist or worsen.
The cost of a visit varies widely by region and clinic. A basic examination with a fecal test might range from 100 to 300 dollars. Bloodwork can add 150 to 400 dollars. Imaging like X-rays or ultrasound can add 200 to 600 dollars. Hospitalization with intravenous fluids can cost considerably more. These are general ranges only, not quotes. Ask your clinic for an estimate before proceeding with tests.
When an Online Vet Can Help, and When It Cannot
Any situation in this article that involves a suspected blockage, bloat, poisoning, difficulty breathing, collapse, seizures, or uncontrolled bleeding requires hands-on care. Do not attempt a remote consultation for these. A dog that is retching with a swollen abdomen, a dog that cannot stand, or a dog that has eaten something toxic needs an emergency clinic now.
For mild, early cases, a remote consultation can be genuinely useful. If your dog has had one or two episodes of vomiting or diarrhea and is otherwise bright, eating, and drinking, an online vet can help you decide whether a visit is needed. They can also guide you through the fasting and bland diet steps, answer questions about medication side effects, and provide follow-up on a known chronic condition like inflammatory bowel disease.
A remote vet can take a detailed history, watch your dog move on video, look at visible signs like stool photos, and give advice. In many states they can prescribe medication. But they cannot palpate the abdomen, listen to the chest, take a temperature, run bloodwork, or image anything. Prescribing rules differ by state, and a veterinarian may require an in-person examination before prescribing certain drugs. If your dog's condition is not clearly mild, or if you are unsure, choose an in-person visit. Remote care is a screening tool, not a substitute for a physical examination when one is needed.
Common Mistakes Owners Make and What to Do Instead
Many well-meaning owners make the same errors when their dog has vomiting and diarrhea. Knowing these can save you stress and your dog discomfort.
Mistake: Fasting for too long. A 12 to 24 hour fast can help settle a stomach, but longer fasts can cause weakness and dehydration, especially in small dogs and puppies. If your dog is still vomiting after 24 hours, call your veterinarian.
Mistake: Switching foods too quickly. When you reintroduce food, do it gradually. Mix a small amount of bland diet with the usual food over two to three days. A sudden switch can trigger another bout of diarrhea.
Mistake: Giving milk or dairy. Many dogs are lactose intolerant. Milk can worsen diarrhea. Plain water is the only safe drink.
Mistake: Repeating the same bland food for too long. A bland diet is not nutritionally complete. After two to three days of stable improvement, transition back to the regular diet. If your dog cannot tolerate regular food after three days, seek veterinary advice.
Mistake: Assuming it is "just a bug." Parasites, dietary indiscretion, infections, and inflammatory conditions can all cause these signs. If symptoms persist beyond 48 hours, or if your dog seems painful or lethargic, home care is no longer appropriate. A veterinarian must examine your dog to find the cause, as described in the MSD Veterinary Manual Digestive Disorders of Dogs and Cats.
| Common Mistake | Better Action |
|---|---|
| Fasting for more than 24 hours | Call your vet if vomiting continues past 24 hours |
| Giving milk to settle the stomach | Offer fresh water only |
| Switching back to regular food abruptly | Mix bland diet with regular food over 2 to 3 days |
| Repeating bland diet for a week | Return to regular food after 2 to 3 stable days |
| Waiting to see if "it passes" for many days | Seek veterinary care if signs last beyond 48 hours |
How to Reduce the Chance of It Happening Again
Prevention focuses on what goes into your dog's mouth. Keep trash bins sealed and out of reach. Watch your dog during walks so they do not eat spoiled food, animal droppings, or foreign objects. Keep human food, especially fatty scraps and toxic items like grapes, onions, and chocolate, away from your dog.
Maintain a consistent diet. Sudden changes in food brand or flavor can upset digestion. If you must change food, do it over five to seven days, gradually increasing the new food while decreasing the old.
Keep vaccinations and parasite prevention current. Intestinal parasites are a common cause of diarrhea in dogs. Regular fecal checks by your veterinarian can catch these early. The American Veterinary Medical Association Pet Owner Resources recommend routine wellness visits so your vet can monitor your dog's overall health and catch problems before they become serious.
What Recovery and Ongoing Management Usually Look Like
Most mild cases of vomiting and diarrhea resolve within 24 to 48 hours of starting home care. Your dog may be tired for the first day. That is normal. Appetite usually returns within 24 hours of the fast ending.
You should see formed stool within two to four days. Loose stool may persist for a few days after vomiting stops. That is common. If diarrhea continues beyond three days, or if vomiting returns after food is reintroduced, contact your veterinarian.
During recovery, keep your dog calm. Short leash walks for bathroom breaks are fine. Avoid vigorous exercise, running, or playing for at least 48 hours after symptoms stop. A settling stomach needs rest.
Watch your dog's energy level. A dog that perks up, drinks water, and shows interest in food is on the right track. A dog that becomes dull, refuses water, or starts vomiting again needs prompt veterinary attention. The MSD Veterinary Manual Pet Owner Version notes that persistent vomiting and diarrhea can lead to dehydration and electrolyte imbalances, which require professional treatment.
Frequently Asked Questions
How long should I wait before calling the vet?
Call your veterinarian if vomiting continues for more than 24 hours, if diarrhea lasts more than 48 hours, or if your dog stops drinking water. Call sooner if your dog is a puppy, a senior, or has a medical condition like diabetes or kidney disease. Also call immediately if you see blood in vomit or stool, if your dog's abdomen looks swollen, or if your dog is straining to vomit without producing anything.
Can I give my dog Pepto-Bismol or Imodium?
No. Do not give any human medication without explicit instructions from your veterinarian. Human drugs can be toxic to dogs, and the correct dose depends on your dog's weight, health status, and the underlying cause of the illness. Your veterinarian must determine whether any medication is appropriate and calculate the exact dose. Giving the wrong drug or dose can cause serious harm.
My dog ate grass and then threw up. Is that normal?
Dogs sometimes eat grass and then vomit. A single episode with no other signs is usually not concerning. If your dog vomits repeatedly, has diarrhea, or seems unwell, do not assume grass is the cause. Watch for other signs and follow the home care steps in this article. If symptoms continue, a veterinary examination is needed to rule out other causes.
Should I keep offering water even if my dog vomits it up?
Yes, but offer small amounts frequently. Give a few tablespoons of water every 15 to 30 minutes. If your dog vomits water immediately, stop offering it for one hour, then try again with a smaller amount. If your dog cannot keep water down after several attempts, call your veterinarian. Dehydration can develop quickly, especially in small dogs.
When can my dog go back to their normal food?
After your dog has kept the bland diet down for 24 to 48 hours without vomiting, begin mixing in their regular food. Start with 25 percent regular food and 75 percent bland diet. Over two to three days, gradually increase the regular food. If diarrhea returns during the transition, slow down the change or contact your veterinarian.
What if my dog seems fine but still has soft stool?
Soft stool can persist for a few days after the main illness resolves. Continue the bland diet and gradual transition to regular food. Ensure your dog drinks enough water. If soft stool lasts more than five days, or if it becomes watery again, contact your veterinarian. Persistent diarrhea can indicate an underlying issue that needs diagnosis and treatment.
Related Clinical & Scientific Guides
- Cat Straining to Poop but Only Passing Mucus: Causes and Care
- Cat Upset Stomach: Home Remedies That Are Safe
- Cat Straining to Poop but Nothing Comes Out: Emergency or Not?
References and Further Reading
- MSD Veterinary Manual Digestive Disorders of Dogs and Cats
- AVMA Pet Owner Resources
- MSD Veterinary Manual Pet Owner Version
- AAHA Pet Owner Resources
Related Articles
- Dog Vomiting and Diarrhea: Home Care or Emergency?
- Dog Vomiting Bile: Home Care and When to Call the Vet
- Dog Blood in Stool: Home Care and When to Call the Vet
- Dog Not Drinking Water: Home Care and When to Worry
- Dog Straining to Urinate: Home Care and When It's an Emergency
This article is general educational information for pet owners. It is not a substitute for veterinary diagnosis, examination, or treatment. If your pet is showing severe or rapidly worsening signs, contact an emergency veterinary hospital immediately.