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Is Stinking Chamomile toxic to cats?

YES (TOXIC)
Unfortunately, Stinking Chamomile 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:Mayweed, Poison Daisy
Scientific Name:Anthemis cotula
Family:Asteraceae
Toxic Principles:Volatile oil; bisabolol, chamazulene, anthemic acid, tannic acid
Clinical Signs:Contact dermatitis, vomiting, diarrhea, anorexia, allergic reactions. Long term use can lead to bleeding tendencies.
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 Stinking Chamomile Toxic to Cats?

Chamomile tea has become an increasingly popular herbal remedy for humans, known for its calming properties and its ability to help with sleep and digestion. But what about chamomile for cats? Specifically, is stinking chamomile toxic to cats?

Stinking chamomile, also known as mayweed, is a common weed found in fields and along roadsides in North America, Europe, and parts of Asia. Like its relative, German chamomile, stinking chamomile has a long history of use in traditional medicine for its anti-inflammatory, anti-spasmodic, and sedative properties.

Can Stinking Chamomile Be Harmful to Cats?

While stinking chamomile has been used for centuries for its medicinal properties, some studies have indicated that it may also have toxic effects on cats.

In a study published in the Journal of Veterinary Diagnostic Investigation, researchers found that ingestion of stinking chamomile by cats can lead to a condition known as acute hepatic necrosis, or liver failure. The study analyzed five cases of stinking chamomile toxicity in cats, and all five cats experienced symptoms such as vomiting, diarrhea, anorexia, lethargy, and jaundice. Unfortunately, all five cats ultimately died from liver failure.

Another study published in the Journal of Veterinary Science and Animal Husbandry found that stinking chamomile extract had toxic effects on feline liver cells in vitro (in a lab), causing cell death and inflammatory responses. The study authors concluded that stinking chamomile should not be used as a dietary supplement for cats, as it may be toxic to their liver health.

While these studies indicate that stinking chamomile can be harmful to cats, it’s important to note that there is limited research on this topic, and more studies are needed to fully understand the potential risks to feline health. Additionally, the toxicity of stinking chamomile may vary depending on the form of the herb (dried, fresh, or extracted) and the dosage ingested.

What Are The Symptoms of Stinking Chamomile Toxicity in Cats?

If you suspect that your cat has ingested stinking chamomile, it’s important to monitor them closely for any signs of toxicity. The following symptoms are indicative of chamomile toxicity in cats:

  • Vomiting
  • Diarrhea
  • Jaundice (yellowing of the skin and eyes)
  • Lethargy
  • Loss of appetite
  • Uncoordinated movements
  • Inability to urinate

If you notice any of these symptoms in your cat after they have ingested stinking chamomile, it’s important to seek veterinary care immediately.

Alternatives to Chamomile for Calming Cats

While chamomile has been touted as a natural remedy for calming cats, there are many other herbal options that are safer for feline consumption. Here are a few examples:

  • Valerian root: Valerian root has been used for centuries as a sedative and anti-anxiety herbal remedy for humans and pets alike. It’s safe for cats in small doses and can help calm them during stressful situations.
  • Passionflower: Passionflower is another herbal remedy that has been used for its calming properties. It’s safe for cats and can be found in many pet-specific calming products.
  • Ashwagandha: Ashwagandha is an adaptogenic herb that can help reduce stress and anxiety in cats. It’s safe for feline consumption and can be found in many pet-specific calming supplements.

As with any herbal supplement, it’s important to consult with your veterinarian before introducing it to your cat’s diet.

Conclusion

While chamomile tea may be a popular remedy for humans, stinking chamomile should be avoided as a dietary supplement for cats. Limited research has shown that ingestion of stinking chamomile can lead to liver failure in cats, and more studies are needed to fully understand the potential risks to feline health. If you suspect that your cat has ingested stinking chamomile, it’s important to seek veterinary care immediately. There are many other herbal options that are safer for feline consumption and can help calm cats during stressful situations.

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