What to Give A Dog With Diarrhea: 18 Vet-Approved Remedies
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No one likes to see their furry companion feeling under the weather, especially when it involves messy, uncomfortable symptoms like diarrhea. Whether it’s a one-time bout or a recurring issue, dog diarrhea can signal anything from minor digestive upset to more serious health concerns. Knowing what to give your dog when this happens is essential for helping them recover quickly and safely. In this guide, we’ll walk you through the most effective treatments, soothing supplements, and dietary tips—vet-approved and scientifically backed—to restore your pup’s gut health and comfort.
The Best Diarrhea Treatment According to Vets
According to the latest research, these are the best treatments to help prevent and stop diarrhea in dogs:
- Highly digestible diets and fiber supplementation: Feeding dogs a highly digestible, low-residue diet with moderate fat content (<14% on a dry matter basis) is recommended to restore normal intestinal function and motility. Incorporating soluble fibers, such as psyllium husks, apple pectin, or beet pulp, can help normalize intestinal motility and water balance, particularly in cases of acute colitis.[1]
- Probiotics may be preferable to antibiotics: A clinical trial of 60 dogs with acute diarrhea was divided into three groups, receiving either a multi-strain probiotic, metronidazole (an antibiotic), or a placebo. The probiotics achieved normal fecal consistency the fastest (3.5 ± 2.2 days), compared to Metronidazole (4.6 ± 2.4 days) and the placebo (4.8 ± 2.9 days).[2]
- Best chronic diarrhea treatment: Expert consensus indicates that chronic diarrhea should be treated in a stepwise manner. Using antibiotics too soon or without a clear need can lead to antibiotic resistance, damage healthy gut bacteria, and exacerbate symptoms. Instead, treatment should begin with dietary changes along with deworming medications and probiotics. Antibiotics are a last resort, after all options have failed or if there is clear evidence of a serious infection.[3]
- Probiotics reduce bad bacteria and improve stool: Dogs that consumed probiotics experienced normalized stool consistency and decreased concentrations of Clostridium perfringens and Enterococcus faecium, bacteria commonly elevated during episodes of diarrhea in dogs.[4]
Dog Diarrhea Treatment By Cause
According to a large retrospective study of 136 dogs with chronic diarrhea, the most common cause was long-term intestinal inflammation, and in most cases, it was triggered by the dog’s diet. In these dogs, the most effective initial treatment was an elimination diet using a novel protein or hypoallergenic diet, which resulted in clinical improvement in most cases.[5]
This study highlights the need to choose treatment based on the cause of your dog’s diarrhea, as not all cases are the same. Treating the wrong cause can exacerbate the condition or delay recovery.
The table below lists common causes of diarrhea and their recommended treatments.
| Cause of Diarrhea | Best Treatment |
|---|---|
| Dietary Indiscretion (e.g., garbage, spoiled food) | 12–24 hr fasting, bland diet (boiled chicken & rice), probiotics (e.g., FortiFlora) |
| Food Intolerance or Allergy | Switch to limited ingredient or hypoallergenic diet, digestive enzymes, novel protein diet |
| Sudden Diet Change | Gradual diet transition over 7–10 days, bland diet support, probiotics |
| Parasites (e.g., Giardia, worms) | Dewormers (e.g., fenbendazole, pyrantel), fecal exam and vet-prescribed antiparasitics |
| Bacterial Infections (e.g., Salmonella, E. coli) | Antibiotics (e.g., metronidazole, tylosin), fluid therapy, Rx Clay or kaolin-pectin supplements |
| Viral Infections (e.g., Parvovirus) | Hospitalization, IV fluids, antiemetics, antiviral support, isolation |
| Inflammatory Bowel Disease (IBD) | Prescription hydrolyzed diet, corticosteroids, probiotics, fiber supplements (e.g., psyllium husk) |
| Stress or Anxiety | Calming treats (e.g., CBD, L-theanine), consistent routine, digestive supplements (e.g., Perfect Form) |
| Medication Side Effects (e.g., antibiotics, NSAIDs) | Consult vet, switch meds if needed, add probiotics or Rx Clay for gut support |
| Pancreatitis | Low-fat diet, bland diet, fluids, vet supervision, anti-nausea medications |
| Liver or Kidney Disease | Veterinary treatment, prescription renal or hepatic diet, supportive supplements |
| Toxins or Poison Ingestion | Immediate vet care, activated charcoal, fluids, monitoring and antidotes if applicable |
Prevention Is The Best Dog Diarrhea Medicine
Proactive care is the most effective way to prevent diarrhea in dogs by addressing the root causes, such as food sensitivities, gut imbalances, and environmental triggers. A key strategy involves using dog allergy tests to identify food allergies, intolerances, or environmental allergens that trigger inflammation and gastrointestinal distress. By eliminating these triggers, you reduce the risk of immune-mediated diarrhea and chronic gut issues. Pair this with dog gut health tests, which analyze the microbiome to detect imbalances in beneficial and harmful bacteria. These tests provide personalized plans, such as probiotic supplements or tailored diets, to restore microbial balance and strengthen the gut’s natural defenses. Testing not only stops diarrhea before it starts but also reduces long-term veterinary costs and supports overall well-being.
🩺 When to See a Vet
See a vet immediately if:
- Diarrhea lasts more than 48 hours
- There’s blood in the stool
- Abdominal pain
- Lack of appetite
- Weight loss
- Lethargy, vomiting, or dehydration occur
- Underlying health condition
Always consult your veterinarian before making changes to your dog’s diet, especially when dealing with diarrhea. Alternatively, you can get personalized guidance from an online registered vet nutritionist through platforms like Vetster, helping you choose the right foods to soothe and support your dog’s digestive system. You can also chat with an online vet to ask questions about your dog’s symptoms and get advice on the best recovery plan.
Best Treatments to Give Dogs For Diarrhea
Here are the best foods, supplements, and natural treatments for dogs with diarrhea.
When your dog has diarrhea, the right diet can make all the difference. These gentle, vet-recommended foods help soothe the digestive system and promote firmer stools.
Fasting (12–24 Hours)
Temporarily withholding food gives your dog’s gastrointestinal system a chance to rest and recover. When your dog eats, their digestive system must work to break down the food, and if the gut is already irritated, this can exacerbate inflammation or prolong diarrhea.
- When to use: Works best for healthy adult dogs showing mild diarrhea with no other symptoms.
- When not to fast: Puppies, small-breed dogs, senior dogs, and dogs with diabetes or other health issues should not fast, as they are more prone to hypoglycemia or dehydration.
- Water access: Keep fresh water available at all times to avoid dehydration during the fasting period.
💡 After 12–24 hours of fasting (if diarrhea improves), you can slowly reintroduce food using a bland diet.
Bland Diet For Dog Diarrhea
Under The Weather
How it works (mechanism of action): It features a simple, easily digestible formula consisting of white rice and 100% human-grade, freeze-dried chicken, both of which are gentle on the stomach. It also includes added electrolytes to help prevent dehydration, a common concern with diarrhea.
Common at-home bland diet combos you can try:
| Combo | Reason It’s Good |
|---|---|
| Boiled chicken (skinless, boneless) + white rice | Lean protein and a gentle carb. This is the most common combo and typically well tolerated. |
| Boiled turkey + mashed sweet potatoes | Turkey is another mild protein, and sweet potatoes offer fiber to firm up stool. |
| White fish (e.g., cod or tilapia) + plain canned pumpkin | Fish is light and easy on the gut; pumpkin adds soluble fiber, which absorbs excess moisture in the GI tract. |
| Scrambled eggs (no oil or dairy) | A soft protein option for dogs who may not tolerate meat. |
| Cottage cheese + white rice | Soft dairy can help some dogs, but skip if your dog is lactose intolerant. |
| Boiled carrots or mashed potatoes (plain, no butter, salt, or seasoning) | Gentle, non-irritating options that provide nutrients and fiber. |
| Oatmeal (unsweetened, unflavored, cooked in water) | Great for soothing the gut and providing energy, especially in smaller dogs. |
Feeding tips:
- Gradually reintroduce regular dog food over 2–3 days by mixing it into the bland meals.
- If diarrhea worsens or doesn’t improve within 24–48 hours, discontinue the bland diet and contact your veterinarian.
- Serve in small portions multiple times a day (e.g., 3–4 times).
Bone Broth For Dogs With Diarrhea
Open Farm
| Ingredient | Mechanism of Action (How It Helps) |
|---|---|
| Chicken Bone Broth | Bone broth is rich in collagen, gelatin, and amino acids (like glutamine) that help repair and soothe the gut lining. It’s also hydrating, providing essential electrolytes to combat dehydration from diarrhea. |
| Carrots | Rich in soluble fiber (pectin), which helps bulk up stools and slow intestinal motility. Carrots also offer vitamin A and antioxidants that can support immune recovery. |
| Pumpkin | A go-to for digestive issues. Its high soluble fiber content absorbs excess water in the GI tract, which firms up loose stools and helps regulate bowel movements. |
| Parsley | A natural anti-inflammatory and antioxidant, it may support detoxification and relieve digestive discomfort. It also provides vitamin K and folate to assist recovery. |
| Turmeric | Contains curcumin, a powerful anti-inflammatory compound that can reduce gut inflammation and support healing. It may also have mild antimicrobial properties. |
| Cinnamon | Acts as a natural antimicrobial and anti-inflammatory. It may help regulate blood sugar and calm spasms in the intestines that sometimes accompany diarrhea. |
Feeding tips:
DIY bone broth recipe:
- Simmer beef or chicken bones (with some meat) in a large pot of water for 12–24 hours.
- Optional: Add dog-safe veggies like carrots or celery (avoid onions or garlic).
- Let cool, skim off the fat, and strain out all solids before serving.
These products support digestive health, balance gut bacteria, and help firm up your dog’s stool. Many are available over the counter and can be mixed into food.
Probiotics
Purina FortiFlora
Pumpkin
Nummy Tum-Tum Pure Organic Pumpkin
Kaolin
Vets Preferred Anti Diarrhea Liquid
Pectin
Pro-Pectalin Chewable Tablets for Dogs
Psyllium Husk
DAYBREAK Psyllium Husk
Electrolyte Solutions
Virbac Rebound
How it works (mechanism of action): Rebound works by replacing key electrolytes—including sodium, potassium, and chloride—that are lost through frequent bowel movements. These minerals are essential for proper nerve function, muscle contraction, and hydration balance. In addition to electrolytes, Rebound contains amino acids such as glycine and taurine, which help support cellular repair and energy production. The inclusion of vitamins, such as B-complex and Vitamin E, aids in metabolic recovery and immune support. Its low-fat, isotonic formulation ensures easy absorption without putting stress on the already sensitive GI system.
Bentonite Clay Supplement
RxClay
How it works (mechanism of action): RxClay™ works by adsorbing bacterial enterotoxins and other harmful substances in the gastrointestinal tract. Its high surface area and adsorption capacity allow it to bind with toxins that commonly trigger inflammation and watery stools. By removing these irritants, RxClay™ supports a healthier GI environment and helps normalize stool consistency. Additionally, the clay increases reabsorption of intraluminal water in the intestines, which further contributes to firmer stools and reduced diarrhea. In a clinical trial involving dogs undergoing chemotherapy, RxClay™ significantly improved stool quality when other antidiarrheal therapies had failed, demonstrating its effectiveness even in complex and treatment-resistant cases. Its non-pharmaceutical, natural formulation makes it an excellent integrative option for dogs with sensitive systems.
These gentle herbal options may support gut healing and reduce inflammation naturally.
Slippery Elm Bark
Herbsmith
How it works (mechanism of action): Slippery elm bark works by producing a mucilaginous (gel-like) substance when mixed with liquid. This gel coats the lining of the stomach and intestines, forming a protective barrier that reduces irritation, soothes inflamed tissues, and promotes healing. This coating effect helps reduce the frequency and urgency of bowel movements, allowing the gut lining time to recover. Additionally, slippery elm contains natural tannins with mild astringent properties, which can help tighten the mucous membranes and reduce inflammation. It’s also mildly prebiotic, supporting the growth of beneficial gut bacteria. Because it’s so gentle, slippery elm is often recommended for puppies, seniors, or dogs with sensitive stomachs.
Papaya Leaf & Plantain Leaf
The Honest Kitchen Herbal Digestive
How it works (mechanism of action): The supplement operates through the synergistic action of its herbal blend, with papaya leaf providing natural enzymes, such as papain, that aid in breaking down proteins and enhancing digestion. These enzymes can help reduce irritation and improve nutrient absorption during or after episodes of diarrhea. Plantain leaf acts as a demulcent and anti-inflammatory, helping to coat and calm the mucosal lining of the stomach and intestines. It contains mucilage that forms a protective layer over irritated tissues, reducing inflammation and promoting healing. Together, these herbs help regulate bowel movements, soothe the GI tract, and restore digestive function, making this supplement an excellent choice for dogs with chronic or intermittent loose stools.
Marshmallow Root
Nature’s Way Marshmallow Root
How it works (mechanism of action): Marshmallow root works by producing a mucilaginous (gel-like) coating when combined with water. This thick, soothing layer adheres to the mucosal lining of the digestive tract, helping to reduce inflammation, ease discomfort, and protect against further irritation. It acts as a demulcent, meaning it calms inflamed tissues, and it may also help slow down gut motility, leading to firmer stools. Additionally, marshmallow root contains antioxidants and mild antimicrobial compounds, which can support immune function during digestive upset. Its gentle, non-stimulating nature makes it safe for short-term use under veterinary guidance, particularly for dogs with sensitive stomachs or chronic digestive inflammation.
Over-the-counter diarrhea medications are generally safe for dogs, but it is always advisable to consult your veterinarian first. Some of these medications are specifically for dogs, while others are for humans.
| Treatment | Type | Precautions | Important Details |
|---|---|---|---|
| Loperamide (Imodium) | Over-the-counter | Not safe for some breeds (e.g., Collies with MDR1 gene mutation); consult vet first | Helps slow gut movement; short-term use only |
| Pepto-Bismol | Over-the-counter | Contains salicylates—**toxic to cats** and risky for dogs with bleeding disorders | Can soothe the GI tract and reduce inflammation |
| Metronidazole | Prescription antibiotic | May cause neurological side effects if overdosed; do not use long-term | Commonly prescribed for bacterial or parasitic diarrhea |
| Tylosin | Prescription antibiotic | May cause temporary GI upset; not FDA-approved for dogs in the U.S. | Often used for chronic diarrhea or inflammatory bowel disease (IBD) |
| Prednisone | Prescription steroid | Can suppress immune system and cause increased thirst, hunger, and urination | Used in inflammatory bowel disease and autoimmune-related diarrhea |
| Dewormers | Prescription or OTC | Specific to type of parasite; improper use may cause vomiting or toxicity | Essential if diarrhea is caused by intestinal worms (e.g., roundworms, hookworms) |
What If My Dog Has Chronic Diarrhea?
If your dog experiences frequent bouts of diarrhea and your veterinarian has ruled out any underlying health issues, a dietary change may be beneficial, always under your vet’s guidance. Many dogs have sensitive stomachs and require specialized diets to manage ongoing digestive issues.
So, what’s the best diet for chronic diarrhea or other gastrointestinal problems? In many cases, veterinarians recommend prescription diets or non-prescription formulas designed for sensitive stomachs. Some pet parents find that switching to fresh dog food or a limited-ingredient diet can significantly improve their dog’s digestive health. Additionally, incorporating a daily probiotic can be a great way to support and maintain a balanced gut microbiome.
The Bottom Line
Effectively managing your dog’s diarrhea involves a thoughtful, step-by-step approach. For mild cases, initiating a bland diet, such as boiled chicken and white rice, alongside ensuring proper hydration, can often alleviate symptoms. Incorporating fiber-rich foods, such as plain canned pumpkin, and administering canine-specific probiotics may further support digestive health. However, if diarrhea persists beyond 48 hours or is accompanied by additional symptoms, such as vomiting, lethargy, or blood in the stool, it’s crucial to consult your veterinarian. They can assess the situation and determine if further interventions, such as prescription medications or diagnostic tests, are necessary. Prompt veterinary attention ensures your dog receives appropriate care and helps prevent potential complications.
Sources
- Acute Diarrhea in Dogs: Current Management and Potential Role of Dietary Polyphenols Supplementation
- A Randomized Double Blinded Placebo-Controlled Clinical Trial of a Probiotic or Metronidazole for Acute Canine Diarrhea
- Chronic Diarrhea in Dogs – Retrospective Study in 136 Cases
- A canine-specific probiotic product in treating acute or intermittent diarrhea in dogs: A double-blind placebo-controlled efficacy study
- Proposal for rational antibacterial use in the diagnosis and treatment of dogs with chronic diarrhoea
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