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Is Garlic toxic to cats?

YES (TOXIC)
Unfortunately, Garlic is toxic and potentially harmful to cats. We recommend you keep your feline friends away from this plant. See the table below for more information.
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Additional Names:Stinking Rose, Rustic Treacle, Camphor of the Poor, Nectar of the Gods, Serpent Garlic, Rocambole
Scientific Name:Allium sativum
Family:Liliaceae
Toxic Principles:N-propyl disulfide
Clinical Signs:Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting
If you think your cat may have ingested a poisonous substance, call 888 426 4435 or your local vet
Detailed Write-up
Author:
Alec
Last Updated:
7/13/25

Is Garlic Toxic to Cats?

Garlic is a common ingredient in many households, and it is known for its various health benefits among humans. However, while it may be good for us, is it safe for our feline friends? In this article, we will take a closer look at garlic and its effects on cats and answer the question, "Is garlic toxic to cats?"

The Science Behind Garlic

Garlic belongs to the Allium family, which also includes onions, leeks, and chives. One of the primary components of garlic is a compound known as N-propyl disulfide, which gives garlic its characteristic odor and flavor. Studies have also linked garlic to various health benefits, such as reducing the risk of cancer, lowering cholesterol levels, and improving heart health.

The Dangers of Garlic for Cats

While garlic may be beneficial to humans, it can be harmful to cats. One of the primary dangers of garlic for cats is that it can cause damage to their red blood cells. Garlic contains a compound called thiosulphate, which can oxidize the hemoglobin in a cat's red blood cells and cause them to burst. This condition is known as Heinz body anemia, which can be fatal without proper treatment.

In addition to causing damage to red blood cells, garlic can also irritate a cat's digestive system. Cats have a different digestive system compared to humans and are not able to process certain compounds found in garlic like we do. Eating garlic can cause gastrointestinal upset in cats, which can lead to vomiting, diarrhea, and abdominal pain.

The Symptoms of Garlic Poisoning in Cats

If your cat has ingested garlic, he or she may exhibit some of the following symptoms:

  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Loss of appetite
  • Lethargy
  • Pale gums
  • Increased heart rate
  • Weakness
  • Difficulty breathing

If you notice any of these symptoms in your cat, it is important to seek veterinary care immediately. A veterinarian can perform blood tests to determine if your cat has Heinz body anemia and provide appropriate treatment.

Alternatives to Garlic for Cats

If you are looking for ways to improve your cat's health, there are plenty of alternatives to garlic that are safe for cats. For example, incorporating small amounts of fresh herbs like parsley, basil, or thyme into your cat's food can provide various health benefits and add flavor to their meals. You can also consider adding supplements like omega-3 fatty acids or probiotics to your cat's diet for added health benefits.

Conclusion

In conclusion, garlic may be a staple in many households, but it is not safe for cats. Eating garlic can cause damage to a cat's red blood cells and irritate their digestive system. If you suspect that your cat has ingested garlic, it is important to seek veterinary care immediately. Always consult with your veterinarian before making any changes to your cat's diet or incorporating supplements.

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