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Last updated: October 2026.
If your cat has been diagnosed with inflammatory bowel disease (IBD), you will know how worrying it is to watch them go through flare-ups. Many owners then come across CBD and wonder whether it could help. This guide explains what feline IBD is, how vets treat it, what the research on CBD in cats does and does not say, and how to approach the subject safely with your vet.
Important: IBD is a medical condition that needs a vet’s diagnosis and treatment. Never stop or change your cat’s treatment without speaking to your vet.
The short answer
- IBD in cats is a long-term inflammation of the gut, causing signs such as vomiting, diarrhoea and weight loss.
- Vets treat it with diet changes and medicines, tailored to each cat.
- There is no research on CBD for cats with IBD, and CBD is not a treatment for it.
- If you are curious about CBD, speak to your vet first and only use a product made for pets.
What is IBD in cats?
Inflammatory bowel disease is a group of conditions in which the lining of the stomach and/or intestines becomes chronically inflamed, with inflammatory cells building up in the gut wall. It most often affects middle-aged and older cats, although it can occur at any age. The exact cause is not fully understood; it is thought to involve the immune system, diet and gut bacteria.
Signs of IBD in cats
- vomiting, often recurring
- diarrhoea or soft stools, sometimes with mucus or blood
- weight loss
- changes in appetite, either reduced or increased
- lethargy
- a dull or unkempt coat
These signs are not unique to IBD. Food allergies, parasites, hyperthyroidism, kidney disease and intestinal lymphoma, a type of cancer, can look very similar. That is why proper investigation by a vet matters.
How vets diagnose and treat IBD
Diagnosis usually involves ruling out other causes with blood tests, faecal tests and imaging such as ultrasound, and often confirming it with biopsies of the gut. Treatment is tailored to each cat and often includes:
- Diet changes, such as a hydrolysed or novel-protein diet, sometimes tried for several weeks.
- Medicines to calm the immune response, such as steroids.
- Vitamin B12 (cobalamin) supplements, as many cats with gut disease are deficient.
- Other medicines for nausea, appetite or specific symptoms.
Many cats with IBD do well with long-term management, although flare-ups can happen.
What does the research say about CBD in cats?
Research on CBD in cats is very limited. A small number of studies have looked at how cats absorb and tolerate CBD, mostly in healthy cats. These suggest CBD is generally tolerated at moderate amounts, although some cats showed side effects such as licking, head shaking or drooling, and cats appear to absorb and process CBD differently from dogs.
There are no published studies of CBD in cats with IBD. Much of what you will read online is based on lab research or human studies, which cannot be assumed to apply to cats. So the honest answer is that we do not know whether CBD has any effect on feline IBD, and it should never replace veterinary treatment.
Why cats are different
Cats are not small dogs. Their livers are less able to process certain compounds, which is why some substances that are fine for people or dogs, including some essential oils and common painkillers such as paracetamol, can be dangerous for cats. It is also why research in dogs or people cannot simply be applied to cats, and why any supplement should be discussed with your vet first.
Talking to your vet about CBD
If you are interested in CBD for your cat, bring it up at your next appointment. Useful questions to ask:
- Is CBD suitable for my cat, given their diagnosis and medicines?
- Could it interact with anything my cat takes, such as steroids?
- What should I watch for, and when should I stop?
- Would you like me to keep a diary of my cat’s symptoms if I try it?
Take the product with you, or a photo of the label and lab report, so your vet can see exactly what is in it.
If your vet agrees: using CBD safely
- Only use a pet product. Human CBD oils may contain flavourings, essential oils or sweeteners that are harmful to cats.
- Make sure it contains no THC. THC can be toxic to cats. Check the lab report.
- Start very low and follow your vet’s guidance.
- Mix into wet food rather than forcing a dropper into your cat’s mouth.
- Keep a diary of appetite, stools, vomiting, weight and behaviour.
- Stop and call your vet if you notice drooling, unusual sleepiness, wobbliness or any worsening of symptoms.
Our CBD Oil for Dogs & Cats 5% is made for pets, and the lab report is on the product page. Read more in our guide to CBD oil for pets.
Living with a cat with IBD: practical tips
- Stick to the diet. If your vet has prescribed a special diet, avoid treats and scraps, which can undo the benefit.
- Keep a symptom diary: vomiting, stools, appetite and weight. It helps your vet adjust treatment.
- Weigh your cat regularly, for example every two weeks, using the same scales.
- Keep stress low. A calm routine, quiet resting places and clean litter trays help.
- Fresh water should always be available, especially if your cat has diarrhoea.
- Go to every check-up, even when your cat seems well.
When to call your vet urgently
- repeated vomiting or vomiting with blood
- diarrhoea with blood, or diarrhoea lasting more than a day or two
- not eating for 24 hours or more
- marked lethargy, weakness or hiding
- signs of dehydration, such as sunken eyes or sticky gums
- any suspected ingestion of a cannabis or THC product
Supporting your cat’s overall wellbeing
Beyond medical treatment, small things make a real difference to cats with long-term conditions: a predictable daily routine, several quiet resting spots at different heights, gentle play to keep them active, regular grooming if they struggle to groom themselves, and plenty of patience during flare-ups. Ask your vet whether a pet insurance policy or a practice health plan could help with the cost of ongoing care.
Frequently asked questions
Can CBD help a cat with IBD?
There is no research on CBD in cats with inflammatory bowel disease, and CBD is not a treatment for it. IBD needs diagnosis and treatment by a vet. Ask your vet before giving your cat any supplement.
Is CBD safe for cats?
Small studies in healthy cats suggest CBD is generally tolerated at moderate amounts, but cats process substances differently from dogs and people, and research is limited. Only use a product made for pets, and only after speaking to your vet.
Can I give my cat human CBD oil?
No. Human products can contain flavourings, essential oils or sweeteners that are harmful to cats, and the strength is not designed for a small animal.
Is THC dangerous for cats?
Yes. THC can be toxic to cats and dogs. Never give a pet any product that may contain THC, and contact your vet straight away if you think your cat has eaten a cannabis product.
What are the signs of IBD in cats?
Common signs include ongoing vomiting, diarrhoea, weight loss, a change in appetite and lethargy. These can also be caused by other conditions, so always see your vet.
How much CBD oil should I give my cat?
Only give CBD to your cat after speaking to your vet, and follow the guidance on a product made for pets. Our 5% pet oil is designed for cats and dogs up to 35kg; most cats need only a very small amount.
Can CBD interact with my cat’s medication?
It may. Cats with IBD are often on medicines such as steroids, and CBD may affect how some medicines are processed. Always tell your vet about any supplement.
How do I give CBD oil to a cat?
The easiest way is to add the drops to a small amount of wet food. Some cats will lick it from a spoon. Never force a dropper into a cat’s mouth.
Can diet alone manage IBD in cats?
In some cats, a change to a hydrolysed or novel-protein diet makes a big difference. Others also need medicine. Your vet will guide you.
Is IBD in cats curable?
IBD is usually managed rather than cured, but many cats live comfortably for years with the right diet and treatment.
Can I use CBD for my dog too?
Our 5% pet oil is made for dogs and cats up to 35kg, with stronger oils for bigger dogs. As with cats, speak to your vet first, especially if your dog has a medical condition or takes medication.
Where can I find more on CBD for pets?
Read our guide to CBD oil for pets, which covers strengths by weight, how to give it and safety, and always talk to your vet before starting.
Disclaimer: This article is general information and not veterinary advice. CBD pet products are not intended to diagnose, treat, cure or prevent any disease. Always consult your vet before giving your pet any supplement, especially if they have a medical condition or take medication.
