Sucralfate (Carafate) for Dogs: Uses, Dosage & Side Effects

This information is for educational purposes only. Never give your pet any medication without your veterinarian's guidance. Dosing, frequency, and safety depend on your pet's specific health profile.

Sucralfate is a prescription gastrointestinal protectant your vet may use when your dog has irritation, erosions, or ulcers in the mouth, esophagus, stomach, or upper small intestine. It is a human medication that is commonly used in veterinary medicine on an extra-label basis. Rather than reducing acid directly, it reacts with stomach acid to form a sticky, paste-like barrier that coats damaged tissue.

That coating can help shield sore areas from acid, bile, and digestive enzymes while the tissue heals. In dogs, sucralfate is often given as a tablet slurry mixed with a small amount of water because that can help it spread over irritated tissue, especially in the esophagus.

Sucralfate is usually part of a larger treatment plan, not a stand-alone fix. Your vet may pair it with other steps such as diet changes, anti-nausea medication, acid suppression, or treatment of the underlying cause of the ulcer or inflammation.

Your vet may prescribe sucralfate for dogs with suspected or confirmed ulcers, esophagitis, reflux-related irritation, or erosions in the digestive tract. It is also used when a dog has signs that suggest upper GI irritation, such as lip licking, repeated swallowing, discomfort when eating, vomiting, black stool, or regurgitation.

Common situations include irritation from stomach acid, recovery after anesthesia-related reflux, esophageal inflammation, and ulcer risk linked to certain medications such as aspirin or other NSAIDs. Some vets also use it to help protect irritated tissue in the mouth or throat.

Sucralfate helps protect damaged lining, but it does not replace finding the reason the tissue became inflamed in the first place. If your dog has vomiting blood, black tarry stool, weakness, collapse, or severe belly pain, see your vet immediately. Those signs can point to bleeding ulcers or other emergencies.

Always follow your vet's instructions, because sucralfate dosing varies with your dog's size, diagnosis, and whether the goal is stomach protection or coating the esophagus. Veterinary references commonly list dogs at 0.5 to 1 gram by mouth every 8 to 12 hours, while another Merck dosing reference lists dogs 15 kg and under at 250 to 500 mg per dog every 6 to 12 hours and dogs over 15 kg at 1 gram per dog every 6 to 12 hours.

Sucralfate works best on an empty stomach. Your vet will often recommend giving it at least 1 to 2 hours before or after food and other oral medications, because it can reduce absorption of many drugs. Tablets are often crushed and mixed with a small amount of water to make a slurry, which may coat irritated tissue more effectively than giving the tablet whole.

Do not change the dose, frequency, or timing on your own. If you miss a dose, ask your vet how to handle it. In many cases, they will have you give it when remembered unless it is close to the next scheduled dose, but you should not double up unless your vet tells you to.

Sucralfate is usually well tolerated in dogs. The most commonly reported side effect is constipation. Some dogs may also have vomiting, drooling, reduced appetite, or mild stomach upset.

Because sucralfate contains aluminum, your vet may use extra caution in dogs with kidney disease or in dogs taking other aluminum-containing products. Serious reactions are uncommon, but any medication can cause problems in the wrong patient or at the wrong dose.

Call your vet promptly if your dog seems more uncomfortable after starting the medication, cannot keep medication down, becomes severely constipated, stops eating, or shows worsening signs such as black stool, blood in vomit, weakness, or collapse. Those signs may reflect the underlying GI problem rather than the medication itself, but they still need timely veterinary guidance.

The biggest interaction issue with sucralfate is not usually a dangerous chemical reaction. It is that sucralfate can bind to other oral medications and lower how much of them gets absorbed. That is why your vet will often space it 1 to 2 hours away from food and other medicines.

Veterinary references specifically note reduced bioavailability of other oral drugs when given at the same time, and Merck also highlights possible interference with fluoroquinolone and tetracycline antibiotics. In practice, your vet may also separate sucralfate from thyroid medication, antifungals, acid reducers, and other oral drugs that need reliable absorption.

Give your vet a full list of everything your dog takes, including prescription drugs, over-the-counter products, supplements, probiotics, and antacids. That helps your vet build a schedule that protects the stomach without accidentally reducing the benefit of another medication.