Can you give your dog an antacid?

In this article:

• Why your dog might need antacids
• Antacids for dogs
• Considerations
• Red flags
• Preventative measures
• The bottom line

In this article

• Why your dog might need antacids
• Antacids for dogs
• Considerations
• Red flags
• Preventative measures
• The bottom line

No appetite, trouble swallowing, chronic coughing, change in barking patterns, and just seeming restless and uncomfortable? These are all signs that your dog may have heartburn, or gastroesophageal reflux disease (GERD). GERD can make dogs very unhappy, but they have no way of telling their owners what’s going on.

If you suspect your dog has GERD, you might want to know: What antacid can I give my dog? While most common over-the-counter heartburn medications are safe for dogs, it’s important to consult with a veterinarian to determine the best treatment plan based on their symptoms and medical history.

Why your dog might need antacids

Antacids work by reducing the acidity of stomach contents. They can be helpful for dogs with conditions that cause heartburn or reflux. According to Anna Panyutin, DVM, a small-animal internal medicine specialist at South Carolina Veterinary Specialists and Emergency Care, there are two main conditions they can help treat. 

1. Gastroesophageal reflux disease (GERD): The most common reason to use antacids in dogs is to treat gastroesophageal reflux disease (GERD) or acid reflux. Antacids “help reduce irritation and inflammation of the esophagus and throat caused by the acid in refluxed stomach contents,” Dr. Panyutin explains. 
2. Gastric ulcers: Though less common, antacids can also be used to treat stomach ulcers in dogs. “The use of antacids in dogs is supported when a stomach or upper small intestinal ulcer/ulceration (or ulcerative esophagitis) is known or strongly suspected, to reduce further injury and promote healing of the ulcer,” Dr. Panyutin notes. 

Which antacids can I give my dog? 

At appropriate doses for dogs, most human antacids are also safe for pups, according to Dr. Panyutin. However, the most effective treatment for acid reflux in dogs is proton pump inhibitors like Prilosec (omeprazole), she says. The following types of acid reducers could help your four-legged friend, with a vet’s supervision.

Antacids

Most of us are familiar with Tums, which are over-the-counter, chewable antacids made of calcium carbonate. Tums work by neutralizing stomach acid and primarily treat heartburn and indigestion. Tums can be given to dogs, but you should consult with your vet before doing so. Your vet can give you info on how many Tums are safe to give your dog and how often you can give them.

Proton pump inhibitors (PPIs)

Omeprazole is a proton pump inhibitor antacid sold under the brand name Prilosec. Dr. Panyutin says that it’s the preferred choice for use in dogs with reflux. “Only proton-pump inhibitor antacids, such as omeprazole or its sister drug esomeprazole, have been shown to be truly effective in dogs in veterinary studies and thus are the preferred choice,” she explains.

One important note is that omeprazole shouldn’t be given for extended periods. “When you block acid for a length of time, there can be a rebound acid production/release that can have painful and deleterious side effects,” explains Laurie McCauley, DVM, veterinarian at Optimum Pet Vitality. She recommends limiting omeprazole treatment to six weeks. 

H2 blockers

Pepcid is the brand name for famotidine, an H2 blocker that decreases stomach acid production. It can be used to treat acid reflux and is sometimes used “off-label” to treat ulcers in dogs. Famotidine formulations include tablets and liquid suspensions. Sometimes it’s administered as an injection by your vet.

Antidiarrheals

Kaopectate is mostly used to treat diarrhea, but it’s also considered a gastrointestinal protectant for minor reflux in dogs. It is available in liquid form and should only be given when recommended by a veterinarian, who can provide specific instructions for use in your dog. In rare cases, it can cause constipation.

Important considerations before giving your dog antacids 

The most important thing to keep in mind before giving your dog antacids is that you shouldn’t initiate their use without first discussing them with a veterinarian. “The use of antacids is not benign, and while they may be necessary in appropriate disease contexts, their use should be limited only as long as truly necessary,” Dr. Panyutin emphasizes.

Dr. Panyutin also notes that all antacids have side effects, a phenomenon well documented in humans, especially with long-term use. “While there is a gap in research identifying the same breadth of antacids’ side effects in dogs, we do at least have some evidence that they can result in gastrointestinal dysbiosis, or an imbalance of the normal bacteria within the gut, which can result in GI upset, such as vomiting, diarrhea, and inappetence,” she says.

These side effects—loss of appetite and gastrointestinal upset (vomiting, diarrhea)—are among the most common Dr. Panyutin sees in her veterinary patients. 

When antacids aren’t enough 

You know that an antacid is working when your dog’s symptoms have decreased. If their symptoms are not improving or even worsening, it’s time to return to your veterinarian to discuss alternative options.

Symptoms of GERD in dogs include:

• Decreased interest in eating
• Issues with swallowing
• Licking the lips more than usual
• Change in barking patterns
• A cough that doesn’t go away
• Pacing or seeming restless at night
• Seeming generally uncomfortable or moody
• Regurgitation, often after eating

It’s especially important to note whether your dog is losing weight due to a very low appetite or appears to be regurgitating their food. These symptoms are more serious and may require different medications than antacids. They also may require a more thorough plan of diagnostic testing by your vet to identify the underlying causes of your dog’s symptoms. 

Preventive measures

Managing acid reflux in dogs isn’t just about medication. It can be helpful to identify the root causes of your dog’s upset stomach and address them.

A good place to start is with nutrition. “Symptoms like occasional stomach upset or soft, inconsistent stools can be easy to overlook or dismiss as ‘normal,’ even when they affect your dog’s daily comfort,” says Rebecca Tremble, DVM, veterinarian at Hill’s Pet Nutrition. “If you’re noticing digestive issues, I’d recommend talking with your veterinarian about nutrition because a targeted diet often can support pets with certain sensitivities.”

Understanding your dog’s dietary sensitivity involves exploring possible causes. For example, if you suspect your dog has a dietary sensitivity, Dr. McCauley recommends “switch[ing] protein sources or dog food companies as the vitamins, minerals, or other ingredients might be consistent across all or most of that company’s diets.”

You might also consider how your dog’s intestinal flora is impacting their reflux and looking for ways to balance their microbiome. “Probiotic supplements can help replenish a healthy gut flora, and prebiotics feed that flora to keep it healthy,” Dr. McCauley says. However, she notes that dogs have a different gut flora balance than humans, so a dog-specific probiotic is needed for optimal effect.

Finally, it’s crucial to stay on top of your dog’s check-ups, and also feel free to reach out to your vet for follow-up questions. “If you ever have any concerns about the management of your pet’s condition, please know that you can always ask your veterinarian questions and engage in open discussion,” Dr. Panyutin emphasizes. 

The bottom line

Antacids may be a good option for dogs with GERD or ulcers. Antacids for dogs are safe in most cases, though antacids like Omeprazole (Prilosec) are more likely to be effective and are more often recommended by your vet. Above all else, you should only give your dog an antacid after seeking veterinary advice and developing a vet-approved treatment plan.