More common than many owners realize. Here's what causes them, how they present, and the vet's diagnostic process.
Gastric ulcers in dogs don't get the attention they deserve. They're more common than many owners realize, particularly in dogs on NSAIDs or going through chronic stress. Recognition matters because complications — particularly bleeding — can become serious.
We trust mechanism. We're skeptical of vibes. Here's a working overview of canine gastric ulcers.
What ulcers actually are
A break in the stomach lining that exposes deeper tissue.
Range from superficial erosions to deep ulcers that can perforate through the stomach wall.
Caused by imbalance between protective factors (mucus, bicarbonate) and damaging factors (stomach acid, irritants).
Common causes
NSAID use — most common cause in dogs. Aspirin, ibuprofen, naproxen are particularly damaging. Veterinary NSAIDs (carprofen, meloxicam, deracoxib) are safer but still can cause ulcers in susceptible dogs.
Stress — chronic stress, severe illness, hospitalization, post-surgical states all elevate ulcer risk.
Underlying disease — liver disease, kidney disease, mast cell tumors (which release histamine), spinal disease.
Bacterial contributions — Helicobacter species are increasingly recognized as contributing factors.
Tumors of the stomach lining.
Why NSAIDs cause ulcers
NSAIDs reduce production of prostaglandins, which protect the stomach lining.
Without adequate prostaglandin protection, normal stomach acid damages the lining.
Higher doses and longer courses increase risk. Combining NSAIDs (including human NSAIDs) dramatically increases risk.
Never give your dog human NSAIDs (ibuprofen, aspirin, naproxen) without explicit vet direction. They're far more ulcerogenic in dogs than in humans.
Recognition signs
Vomiting, sometimes with blood (frank red or coffee-ground appearance).
Black, tarry stool (melena) — digested blood in stool.
Decreased appetite.
Weight loss.
Abdominal pain — sometimes obvious, sometimes subtle.
Lethargy.
Pale gums in severe bleeding cases.
Collapse in advanced cases.
Why prompt vet attention matters
Active bleeding ulcers can cause significant blood loss.
Perforation — when the ulcer breaks through the stomach wall — causes peritonitis, a life-threatening emergency.
Earlier diagnosis means earlier treatment and better outcomes.
Don't try home remedies for suspected ulcers.
Diagnosis
Clinical signs and history (recent NSAID use, stress, illness) raise suspicion.
Bloodwork — anemia from blood loss, elevated kidney values from dehydration, sometimes other findings.
Endoscopy — gold standard for visualizing and characterizing ulcers, with biopsy capability.
Sometimes ultrasound to assess stomach wall and rule out other causes.
Treatment approaches
Discontinue contributing factors (NSAIDs, address underlying disease).
Acid suppression — proton pump inhibitors (omeprazole, pantoprazole) or H2 blockers (famotidine).
Mucosal protectants — sucralfate coats ulcer beds, promotes healing.
Treatment of bacterial contributors if Helicobacter or other bacteria identified.
Severe cases may require hospitalization, IV fluids, transfusion, or surgery.
Recovery and healing time
Most uncomplicated ulcers heal within 2-6 weeks with appropriate treatment.
Follow-up endoscopy may be performed in some cases to confirm healing.
Acid suppression continued until healing is confirmed.
Dietary modifications during healing — bland, small frequent meals.
Preventing recurrence
Address underlying causes — NSAID alternatives, stress management, treatment of contributing diseases.
Some dogs require ongoing acid suppression if NSAIDs can't be discontinued.
Periodic monitoring for high-risk dogs.
Discuss long-term management strategy with your vet.
NSAID alternatives for pain management
For dogs whose ulcers were NSAID-induced, alternative pain management approaches include:
Gabapentin for chronic pain.
Amantadine for some pain types.
Glucosamine/chondroitin for joint pain.
Acupuncture, physical therapy, weight management.
Sometimes lower-risk NSAID classes or co-administration with gastric protectants.
Always discuss alternatives with your vet.
Common questions about gastric ulcers
Can I give my dog Pepcid (famotidine) for an upset stomach? Talk to your vet — sometimes appropriate, sometimes not, dosing matters.
Will my dog need to stay on acid suppression forever? Depends on cause. Some dogs do, others don't.
Can stress alone cause ulcers? Yes — in dogs experiencing severe or chronic stress.
How can I tell if it's working? Resolution of symptoms typically within days. Healing takes weeks.
What to track at home
Resolution of symptoms — vomiting frequency, blood in stool, appetite, energy.
Medication compliance.
Any new concerning signs.
Bring detailed notes to follow-up appointments.
Where our formulas fit
For dogs in recovery from gastric ulcers and cleared by your vet for supportive supplementation, a daily GI calm blend may complement the acid suppression and dietary management your vet has designed. Dogs with gastric ulcer recovery under vet supervision often respond to a stack of mild GI-supportive ingredients rather than one heavy hitter. G.I. Balance delivers that stack — pumpkin, apple pectin, fennel, ginger, agave inulin — in a single daily serving.
Related reading
The bottom line
There's a reason we lead with mechanism instead of testimonials. Testimonials are easy to manufacture; mechanisms aren't. We'd rather stand on the second.