Is Rosemary Extract Safe for Dogs? What the Evidence Shows

Key Takeaways

• Rosemary extract is safe for most dogs and is widely used as a natural preservative in dog food.
• It helps protect fats and oils from oxidation and is a natural alternative to BHA and BHT.
• If your dog has epilepsy or a history of seizures, ask your vet before choosing food with rosemary extract.
• Rosemary extract is not the same as rosemary essential oil, which can be harmful to dogs. 
• No dog-specific study has proven that rosemary extract causes seizures in dogs.
• The seizure precaution is based on veterinary guidance and the known effects of rosemary's active compounds. 

You flip over the dog food bag. You spot "rosemary extract" on the label. Your stomach drops a little. Wait, isn't rosemary bad for dogs?

Take a breath. Rosemary extract is safe for most dogs. It’s a natural preservative. Dogs with epilepsy or a history of seizures are the exception, since some vets link it to seizure risk. Just don't confuse it with rosemary essential oil. That's a completely different and riskier ingredient.

What Is Rosemary Extract and Why Is It in Dog Food? 

What Rosemary Extract Actually Is

Rosemary extract is a food-grade ingredient made from the rosemary plant. It contains natural antioxidant compounds like carnosic acid and rosmarinic acid. It is added to dog food in small amounts, not to improve flavor, but to keep it fresh. 

Why Manufacturers Use It

Manufacturers use rosemary extract as a natural preservative. It stops the fats and oils in dog food from going rancid. This keeps the food fresh, flavorful, and nutritionally stable for longer.

Many brands choose rosemary extract instead of synthetic preservatives like BHA (butylated hydroxyanisole) and BHT (butylated hydroxytoluene). One reason is that studies have linked the long-term, high-dose use of BHA and BHT with liver damage and hormone disruption. 

Is Rosemary Extract Safe? What the Evidence Shows

For Healthy Dogs, Yes

For healthy dogs without a seizure history, rosemary extract is generally considered safe. Commercial dog food uses it in small, carefully measured amounts. The U.S. FDA also recognizes rosemary extract as safe (GRAS) when used at appropriate levels. 

The Antioxidant Benefits

Rosemary extract contains antioxidant compounds, mainly carnosic acid and carnosol. Together, they account for over 90% of its antioxidant activity. These compounds neutralize harmful free radicals, which damage healthy cells over time.

However, most of the research has not been conducted in dogs. More dog-specific studies are needed to confirm these health benefits.

When to Be Careful: The Two Real Exceptions

Dogs With Epilepsy or Seizure Disorders

Dogs with epilepsy or past seizures should avoid rosemary extract in food or treats unless a vet says it's okay. Rosemary contains two compounds, camphor and 1,8-cineole, that may make seizures more likely in sensitive dogs.

Vets base this advice on the known effects of these compounds on the nervous system. However, no study has shown that rosemary extract directly causes seizures in dogs.

Rosemary Extract vs. Rosemary Essential Oil 

How to Read the Label

What to Look For

Check the ingredient list for "rosemary extract." Ingredients are listed in descending order by weight. Rosemary extract often appears near the end because it’s used in small amounts. 

When to Call Your Vet

Talk to your vet before choosing a food, treat, or supplement with rosemary extract if your dog has a history of seizures or takes seizure medication. They can recommend the safest option for your dog's needs. 

What Really Matters in a Dog Food?

Don't judge a dog food by a single ingredient. Look at the entire recipe instead. A well-formulated formula combines high-quality ingredients in the right ratio to provide complete and balanced nutrition.

Wild Earth follows the same approach. It uses rosemary extract and mixed tocopherols (vitamin E) as preservatives. The recipes are also free from meat, dairy, wheat, and soy, which are among the most common food allergens for dogs. 

Explore Wild Earth's recipes if you're looking for a clean, hypoallergenic formula.

Let's Clear Up the Confusion

Is rosemary extract safe for dogs?

Yes. Rosemary extract is safe for most dogs and is commonly used as a natural preservative in commercial dog food. It protects fats and oils from oxidation. Dogs with epilepsy or a history of seizures are the main exception.

Can rosemary extract cause seizures in dogs?

There is no confirmed clinical evidence that rosemary extract causes seizures in dogs. However, veterinarians recommend caution for dogs with epilepsy because rosemary contains compounds that may affect the nervous system in sensitive animals. 

What's the difference between rosemary extract and rosemary essential oil?

Rosemary extract and rosemary essential oil are not the same ingredient. The main differences are:

• Rosemary extract: Diluted and used in commercial dog food.
• Rosemary essential oil: Highly concentrated and used in aromatherapy or topical products.
• Safety: The extract is food-grade and is safe, while essential oil can be harmful if ingested or applied undiluted.

Is rosemary essential oil toxic to dogs?

Yes, rosemary essential oil can be harmful to dogs because it is highly concentrated. Undiluted exposure may cause skin irritation, vomiting, diarrhea, or neurological issues in severe cases. Keep essential oils away from your dog unless your vet specifically recommends them.

Should I avoid all dog food with rosemary in it?

No. Most dogs can safely eat food with rosemary extract. If your dog has epilepsy or a history of seizures, ask your vet before choosing a food or treat that contains it. Otherwise, there is no need to avoid rosemary extract. 

What should I do if my dog has a reaction after eating food with rosemary extract?

Stop feeding the food and contact your vet if your dog has a reaction after eating rosemary extract. Seek vet care right away if you notice tremors, disorientation, or seizure activity. If the symptoms are mild, avoid offering the food again until your vet says so.

The Bottom Line

For most dogs, rosemary extract is a safe ingredient and a common natural preservative in commercial dog food. If your dog has epilepsy or a history of seizures, ask your vet before choosing a food or treat with rosemary extract.

When choosing dog food, look beyond a single ingredient. Focus on the overall recipe, ingredient quality, and your dog's individual needs.