Is CBD Safe for Cats?

Used sensibly, CBD appears to be well tolerated in cats – but cats are not small dogs. They are more sensitive than other pets, there is less research in cats than in dogs, and THC is genuinely dangerous to them. A THC-free product made for cats, started at a low dose and cleared with your veterinarian, is the safe way to do this. Skip human and marijuana products entirely.

Quick answer

The safest CBD approach for cats is conservative: use a cat-specific, THC-free product with a COA, start low, and check with your veterinarian first. Watch for drowsiness, soft stool, stomach upset, or appetite changes. Keep marijuana, edibles, human THC products, and human CBD products away from cats.

The honest answer

CBD has a good safety record across pets, and most cats tolerate a sensible dose well. When side effects happen they are usually mild and dose-related. But two things are specifically true for cats: there is far less published research in cats than in dogs, and cats process compounds differently. So the right approach is cautious and vet-guided, not a leap of faith. Below is exactly what to watch.

Why cats are different from dogs

• Slower metabolism. Cats clear many substances through the liver more slowly than dogs or people, so the same amount affects them more strongly. This is why cat doses are small and why you start low and go slow.
• Sensitivity to additives. Cats are sensitive to many essential oils and added flavorings. A clean, cat-formulated product avoids ingredients that are fine for dogs but not cats.
• Small body size. A cat is a fraction of a dog’s weight, so precision matters. An oil you can measure drop by drop is easier to dose accurately than a one-size chew.

THC is dangerous for cats – this is the big one

THC, the compound that makes people high, can make cats very ill. Signs of THC toxicity include stumbling, severe drowsiness, dribbling urine, low body temperature, and disorientation. This is the single most important reason to use a THC-free (broad-spectrum) product with a certificate of analysis confirming it, and to keep any marijuana, edibles, or human THC products well out of reach. If you ever suspect your cat got into THC, call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 right away.

In a controlled 2021 study of healthy cats, lethargy, stumbling, low body temperature, and third-eyelid protrusion occurred more often with THC-containing oils than with the CBD-predominant oil. The study used controlled conditions and does not make accidental THC exposure safe. Choose a product whose current certificate of analysis shows no detectable THC.

How cats differ	What it means for CBD
Slower liver metabolism	The same amount affects a cat more strongly, so doses are small: start low and go slow
Sensitivity to additives	Avoid essential oils and added flavor oils; use a clean, cat-formulated product
Small body size	Precision matters; an oil you can measure drop by drop beats a one-size chew
THC is genuinely dangerous to cats	THC-free (broad-spectrum) with a COA confirming it, and keep marijuana, edibles, and human THC products out of reach

Drug interactions

CBD affects the same liver enzymes (the cytochrome P450 family) that process many medications, which means CBD can change how another drug behaves. If your cat takes any medication, talk to your veterinarian before adding CBD. This is the most important safety step for a cat already on treatment.

Side effects to watch for

At sensible doses these are uncommon and mild:

• Drowsiness or sluggishness (most common, and a sign the dose may be too high)
• Soft stool or mild stomach upset
• Changes in appetite

Lower the dose if you see any of these. Stop and call your vet if anything seems more than mild.

A placebo-controlled 2021 study randomized 20 healthy cats across five groups, including four cats given a CBD-predominant oil through a series of escalating administrations. Across the study, reported adverse events were mild and temporary. The CBD-predominant oil caused fewer neurologic and behavioral changes than the oils containing THC, while gastrointestinal effects were more common with the MCT carrier oil.

Is it safe to give a cat CBD every day?

Daily use has been studied in healthy cats, but only with one specific product and for a limited period. In a randomized, blinded, placebo-controlled study, healthy adult cats received a THC-free CBD distillate or placebo each day for 26 weeks. The CBD product was generally well tolerated, and most blood, urine, and other health measures showed no clinically significant group differences.

That does not establish lifetime safety or safety for every cat or product. Individual liver-enzyme changes occurred, and the authors advised veterinary checks for cats with a history of liver problems or suspected infection. Tell your veterinarian the exact product your cat receives and let them decide whether monitoring is appropriate.

Is CBD safe for a cat with kidney disease?

Unknown. No controlled study has evaluated CBD safety in cats with chronic kidney disease. A 2025 review reported only short-term pilot observations in two cats with IRIS stage 2 kidney disease. Their blood chemistry did not change during that brief observation, but two cats cannot establish safety. The longer-term controlled study used healthy cats, so its findings do not answer the kidney-disease question.

CBD can interact with medications through liver enzymes, and side effects such as drowsiness, stomach upset, or appetite changes may matter more in a cat already dealing with kidney disease. Do not add CBD without the veterinarian managing your cat’s condition. Bring the exact product and its certificate of analysis; your veterinarian should decide whether it belongs in the plan and what monitoring is appropriate.

Gabapentin or CBD for a cat?

Owners run into both names, so it helps to be clear about what each one is:

	Gabapentin	CBD
What it is	A prescription medication	A hemp-derived supplement sold over the counter
Who provides it	Prescribed and directed by a veterinarian	Purchased without a prescription; the exact product should still be reviewed with your veterinarian
Where it fits	A veterinarian may include it in a plan for a specific event, including some pre-visit situations	May support normal calm as part of an everyday routine; it is not an acute sedative or a treatment for an anxiety disorder

They are not interchangeable. Do not substitute one for the other or combine them without veterinary guidance.

What to avoid

• Human CBD products – often too strong and may contain flavorings or essential oils unsafe for cats.
• Marijuana or any product with THC – toxic to cats.
• Products with no COA – you cannot verify what is in them.
• Hemp seed oil sold as CBD – it is a food oil with essentially no CBD.

How to use CBD safely in a cat

1. Choose a THC-free, cat-formulated product with a current COA.
2. Start low – a small dose twice a day. Use our dosage calculator for an exact starting amount by weight, then adjust slowly.
3. Check with your veterinarian first, especially if your cat is on any medication or has a health condition.
4. Watch and adjust over a week or two; less is more with cats.

For the full picture, see our main guide to CBD for cats.

When to call your vet

Talk to your veterinarian before starting CBD, especially if your cat takes any medication, since CBD affects the same liver enzymes many drugs use. Stop and call your vet if side effects seem more than mild. And if you ever suspect your cat got into THC, marijuana, or edibles, call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 right away.

Keep reading

CBD for Cats

CBD for cats: the full guide

CBD for Cat Anxiety

For stressful moments

How to Choose a CBD Product

Choose a cat-appropriate product

References and further reading

• Deabold KA, et al. Single-dose pharmacokinetics and preliminary safety assessment of CBD-rich hemp in healthy dogs and cats. Animals (2019).
• Kulpa JE, et al. Safety and tolerability of escalating cannabinoid doses in healthy cats. Journal of Feline Medicine and Surgery (2021).
• Coltherd JC, et al. Healthy cats tolerate long-term daily feeding of cannabidiol. Frontiers in Veterinary Science (2024).
• Cornell Riney Canine Health Center. CBD: what you need to know about its uses and efficacy.
• Nino Cital S, Wakshlag J, et al. Cats and cannabinoids: past, present and future. Journal of Feline Medicine and Surgery (2025).
• van Haaften KA, et al. Effects of a single preappointment dose of gabapentin on signs of stress in cats during transportation and veterinary examination. JAVMA (2017).
• ASPCA Animal Poison Control Center (24/7 guidance for THC or marijuana ingestion).
• American Veterinary Medical Association. Cannabis use and pets.
• U.S. Food and Drug Administration. What you need to know about products containing cannabis or CBD.

Frequently asked questions

This guide is educational and is not a substitute for veterinary diagnosis or care. If you are worried about your pet, talk to your veterinarian.