My kitten has diarrhoea, what should I do?

Written by Noa | July 28, 2025

Kittens are adorable and playful little creatures, but just like humans, they can suffer from gastrointestinal issues. Diarrhoea in kittens is not uncommon and may sometimes be accompanied by vomiting. If you're wondering what to do when your kitten has diarrhoea, you're in the right place. In this blog, we’ll explore the possible causes of diarrhoea and share tips on how to help your kitten.

Kitten walks through the grass with its little head held high

Why does your kitten have diarrhoea?

To respond effectively to diarrhoea, it’s important to understand the possible causes. Here are some common reasons why your kitten may be experiencing diarrhoea:

Diarrhoea caused by stress: The transition from the litter to a new home can be stressful for a kitten, which may lead to diarrhoea. Provide a calm environment and give your kitten time to adjust to the new surroundings.
Change in diet: Introducing different food can upset a kitten’s sensitive digestive system. A gradual transition to new food over a period of 7 days is recommended to help prevent diarrhoea.
Ate something unusual: Curious kittens often like to taste everything. Make sure your home is kitten-proof to avoid accidents.
Parasites: Worms and other parasites can cause diarrhoea. Regular deworming is essential for your kitten’s health.
Stomach flu: Just like humans, kittens can catch viruses, especially when their environment changes. Watch for symptoms and contact your veterinarian if you are in doubt.

Supporting your kitten with diarrhoea

What can you do if your kitten has diarrhoea?

Diarrhoea in kittens is something to take seriously. Kittens can become dehydrated quickly, so it’s important to observe your cat closely and always consult a veterinarian if in doubt. Here are some general steps you can take:

Consult a veterinarian: If your kitten has diarrhoea, seek professional advice. Kittens are sensitive and an early diagnosis is crucial.
Supportive measures: Even if your kitten doesn’t appear ill, diarrhoea can damage the intestinal lining. Support your kitten with special food and supplements.
Special food and supplements: Choose easily digestible, high-calorie food and consider wet food to reduce the risk of dehydration. Supplements can help to firm up the stool.

Support your kitten with diarrhoea with special food

The food should be easy to digest and rich in calories, as a kitten needs plenty of energy from its diet. It’s also a good idea to feed wet food, as this helps lower the risk of dehydration. Good options include Royal Canin Gastrointestinal Kitten Wet. Other suitable choices are Purina Pro Plan Veterinary Diets EN Gastrointestinal – Cat – Tin, Hill’s i/d Digestive Care pouch, and Specific Digestive Support FIW.

Support your kitten with supplements

When your kitten has diarrhoea, supplements can be a valuable addition to the treatment. Probiotics, for example, can help restore the balance of healthy gut bacteria. Dr. Ann’s Probiotics is a good option. If the diarrhoea is severe, you can first try a paste that helps firm the stool, such as Protexin Pro-Kolin Advanced Cat.

Colostrum can also support intestinal health. Good choices include Col-O-Cat or the Colostrum Therapy from Biestwinkel. In cases of severe diarrhoea, Biestwinkel Rehydration or Orolade Advanced GI+ can help restore fluid balance.

What should I do if my kitten is also vomiting?

If your kitten is also vomiting, I recommend seeing your veterinarian. Especially if your kitten can’t keep anything down, it will need extra support.

Prevention is better than cure: Tips to help prevent diarrhoea in kittens

While it’s important to know what to do if your kitten already has diarrhoea, it’s even better to prevent the situation altogether. Here are some tips to help prevent diarrhoea in kittens:

Gradual food transition: Avoid sudden changes to your kitten’s diet. Take your time (at least 7 days) to gradually mix in the new food when switching to a different brand or type. This helps your kitten’s sensitive digestive system adapt.
Keep things kitten-proof: Kittens are curious and explore the world by chewing on everything. Make sure your home is safe by keeping toxic substances and small objects out of reach.
Regular deworming: Follow the deworming schedule as recommended by your veterinarian. Keeping parasites at bay can help reduce the risk of diarrhoea.
Minimise stress: Moving to a new home can be stressful for a kitten. Create a calm, comfortable environment and give your kitten time to adjust.
Maintain hygiene: Ensure a clean living space. Regularly clean the litter box and provide fresh water to support your kitten’s overall health.

Taking preventive measures and providing a healthy environment can significantly help reduce the risk of diarrhoea in kittens. By being proactive and keeping a close eye on your little companion’s health, you can minimise discomfort and help your kitten grow up healthy and happy.

Always remember that every kitten is unique, so it’s vital to consider the specific needs and health of your kitten. If in doubt or if symptoms persist, always contact your veterinarian!