Use code ONREPEAT at checkout for 65% off up to $65 on Auto-Refill Orders.

Use code DOGDAY40 at checkout for $40 off your next order over $100.*

*Coupon terms and conditions: code DOGDAY40 applicable for one-time or Subscribe & Save orders, for a limited time. Coupon codes apply to many, but not all, products. Excluded products include but are not limited to Azodyl, Bravecto, Bravecto Plus, Droncit, Incurin, Mometamax, Numelvi, Optimmune, Posatex, Sentinel, Tri-Heart Plus, VetPen, Vetsulin, compounded and refrigerated medications. Promotional code valid through August 23, 2026.

Use code DOGDAY60 at checkout for $60 off your next order over $200.*

*Coupon terms and conditions: code DOGDAY60 applicable for one-time or Subscribe & Save orders, for a limited time. Coupon codes apply to many, but not all, products. Excluded products include but are not limited to Azodyl, Bravecto, Bravecto Plus, Droncit, Incurin, Mometamax, Numelvi, Optimmune, Posatex, Sentinel, Tri-Heart Plus, VetPen, Vetsulin, compounded and refrigerated medications. Promotional code valid through August 23, 2026.

Now Available on Koala: Royal Canin Vet Fresh Frozen Diets! Use code FRESH50 at checkout for 50% off your first Subscribe & Save order.*

*Coupon terms and conditions: code FRESH50 applicable for first-time Subscribe & Save orders only. Coupon code applies to the following products: Royal Canin Appetite Stimulation Fresh Frozen Dog Food, Royal Canin Gastrointestinal Low Fat Fresh Frozen Dog Food, and Royal Canin Selected Protein Pork Recipe Fresh Frozen Dog Food. Promotional code valid through December 31, 2026.

Allergy Relief

Antibiotics

Anxiety, Behavior & Stress

Arthritis, Pain & Joint Health

Dental

Dewormers & Parasiticides

Diabetes & Insulin

Digestive & Gastrointestinal

Ear Care

Eye Care

Flea & Tick

Food

Heart & Blood Pressure

Heartworm

Immune Support

Respiratory Care & Asthma

Seizure & Epilepsy

Skin & Coat

Thyroid & Hormone

Urinary Tract & Kidneys

Vitamins & Supplements

All Cat Food

Dry Food

Treats

Veterinary Diets

Wet Food

All Dog Food

Digestive and stomach medicine for dogs to support gut health and digestion. Shop vet-approved options at Koala Health.

Digestive & Stomach Medicine for Dogs

digestive & gastrointestinal

Purina Pro Plan Veterinary Diets EN Low Fat Gastroenteric Dry Dog Food

Purina Pro Plan Veterinary Diets HA Hydrolyzed Chicken Flavor Wet Dog Food

Purina Pro Plan Veterinary Diets HA Hydrolyzed Chicken Flavor Dry Dog Food

Purina Pro Plan Veterinary Diets HA Hydrolyzed Vegetarian Formula Dry Dog Food

Sucralfate is used to coat the upper gastrointestinal tract to treat ulcerations and inflammation.

Sucralfate

Tylosin (Tylan) is an antibiotic most commonly used for treatment of chronic diarrhea, but can be used for skin and respiratory infections. 

Tylan Soluble Powder

Tylosin Soluble Powder

Pancreatic enzymes (Viokase-V Powder) are used in conditions like exocrine pancreatic insufficiency, in which the body does not supply its own digestive enzymes.