Is Chamomile Toxic to Cats and Dogs?
The chamomile plant is toxic to both cats and dogs. According to the American Society for the Prevention of Cruelty to Animals (ASPCA), this common plant contains compounds that can be harmful to pets if they eat it or have it touch their skin.
While many people associate chamomile with herbal tea, the plant itself, Anthemis nobilis, poses risks to pets. The toxicity applies to the entire plant, including its flowers, leaves, and stems. Pet owners should be aware of the potential for adverse reactions, which can range from mild to more serious, especially with long term exposure.
Chamomile: what the ASPCA database lists
| ASPCA entry | Chamomile |
|---|---|
| Other common names | Manzanilla, Garden Chamomile, Roman Chamomile, True Chamomile, Corn Feverfew, Barnyard Daisy, Ground-apple, Turkey-weed |
| Scientific name | Anthemis nobilis |
| Family | Compositae |
| Toxic to | Toxic to Dogs, Toxic to Cats, Toxic to Horses |
| Non-toxic to | None listed |
| Toxic principles | Volatile oil; bisabolol, chamazulene, anthemic acid, tannic acid |
| Clinical signs listed | Contact dermatitis, vomiting, diarrhea, anorexia, allergic reactions. Long term use can lead to bleeding tendencies. |
What the ASPCA lists for chamomile
The ASPCA identifies chamomile as toxic to cats, dogs, and horses. The plant belongs to the Compositae family and is also known by several other names, including Manzanilla, Garden Chamomile, Roman Chamomile, and True Chamomile.
The toxic principles responsible for adverse reactions in pets include volatile oil, bisabolol, chamazulene, anthemic acid, and tannic acid. Exposure to these substances can cause several clinical signs in animals. The ASPCA lists the following potential symptoms:
- Vomiting
- Diarrhea
- Anorexia (loss of appetite)
- Contact dermatitis (skin irritation)
- Allergic reactions
The organization also notes that long term use can lead to bleeding tendencies, which is a more serious concern related to repeated exposure over time.
What this means in a home with pets
Having chamomile in your home or garden requires careful management to protect your pets. Since both cats and dogs are susceptible to its toxic effects, they should not be allowed to chew on or eat any part of the plant. Even skin contact can be a problem, potentially causing contact dermatitis. This means a pet brushing against the plant could develop skin irritation.
The risk extends to both fresh and dried forms of the plant. Curiosity might lead a cat or dog to nibble on chamomile leaves or flowers, whether they are growing in a pot, in a garden bed, or part of a dried arrangement. Because symptoms can include common issues like vomiting and diarrhea, a pet owner might not immediately connect the signs to the plant. It is always wise to know which plants in your home and yard are safe for pets.
Keeping cats, dogs, and this plant apart
The most effective way to prevent chamomile poisoning is to ensure your pets cannot access the plant. If you have chamomile in your garden, consider fencing it off or using other barriers to create a pet-free zone. For indoor plants, place them in rooms that your pets do not enter, or on high shelves or in hanging baskets that are completely out of reach. Remember that cats are skilled climbers, so a high shelf may not be enough of a deterrent.
Always supervise your pets when they are outdoors to prevent them from sampling unknown plants. When introducing any new plant to your home, it is a good practice to check a reliable resource like the ASPCA’s plant list to confirm its safety. If you use dried herbs, ensure they are stored in sealed containers in secure cupboards that a curious pet cannot open.
When to call your vet
If your pet chewed or ate part of this plant, call your veterinarian or an animal poison control line. Note which plant and which part, how much may be gone and when, and take a photo or a piece of the plant with you.
If you suspect your cat or dog has eaten any part of a chamomile plant or is showing signs like vomiting, diarrhea, or skin irritation, contact a veterinarian or a pet poison hotline immediately. Be prepared to tell them what your pet ate, how much, and when it happened. Do not attempt to treat your pet at home without professional veterinary guidance.
Emergency signs: go now
- Collapse, fainting or severe weakness
- Seizures, tremors or trouble standing
- Trouble breathing or blue, gray or very pale gums
- Repeated vomiting or retching, or a swollen, painful belly
- Any known contact with a substance listed as toxic, even before signs appear
Book an appointment soon
- Vomiting or diarrhea that lasts or keeps coming back
- Not eating or drinking, or drinking much more than usual
- Drooling, pawing at the mouth or a swollen face
- Lethargy, hiding or acting unlike themselves
ASPCA Animal Poison Control Center: (888) 426-4435 (a consultation fee may apply). Your own vet or nearest emergency clinic is always a good first call.
Sources
Last checked October 21, 2026. Listings and guidance can change; your veterinarian knows your pet’s health history.