Kittens provide so much joy, but caring for them can be a lot of work. And if your kitten is experiencing signs of an upset stomach, this can add to the daily challenges — both for you and your cat.
Gastrointestinal (GI) issues have several potential causes, and kitten upset stomach remedies depend on variables like the underlying cause, your kitten's age and the severity of their condition. However, getting your kitten back to feeling their best usually isn't hard — it just takes some investigation and consultation with your veterinarian. Here's what you need to know to help address your kitten's upset stomach.
Signs Your Kitten Might Have an Upset Stomach
Several signs can indicate that something's not quite right with your kitten's digestion. Here are a few to look out for:
Diarrhea
Diarrhea can range from loose stool in the litter box to accidents throughout the house.
Vomiting
Frequent (more than once a week) or consistent vomiting can be a sign of an underlying concern that needs attention.
Decreased Appetite
Sudden disinterest in eating or avoiding food entirely are both signs that something is amiss.
All of these signs warrant a phone call to your veterinarian to schedule an appointment. Kittens are especially vulnerable to illness due to their small size and developing immune system, so they can easily become dehydrated or undernourished without proper intervention.

Causes of Upset Stomach
With kittens, the three most common causes of an upset stomach are parasites, gastroenteritis (inflammation of the stomach and intestines) and dietary indiscretion (eating nonfood items or foods outside of their usual routine). And yes — some kittens can have two or even all of these at once.
Some of the more common intestinal parasites that can cause diarrhea and/or vomiting are:
- Coccidia
- Roundworms
- Hookworms
- Tapeworms
- Giardia
Diagnosing Your Kitten's Upset Stomach
To determine whether your kitten has an intestinal parasite, your veterinarian will test a sample of their feces and prescribe treatment as appropriate. However, gastroenteritis and dietary indiscretion are harder to diagnose (kittens never confess to what silly thing they ate!). In a worst-case scenario, kittens can eat an object that causes a physical obstruction of the intestines, which requires surgery. Thankfully, this is less common than the other causes.
There's no test for gastroenteritis, so your veterinarian will make a presumptive diagnosis by ruling out other causes. Gastroenteritis can be caused by abruptly changing foods, feeding a new treat or human food that's irritating to the gut, or, in the case of stray kittens, eating whatever they can find (as well as other causes). If you adopt a formerly stray kitten, chances are their gut microbiome didn't get off to a great start, which can make them more prone to GI issues.
How to Prevent Tummy Aches
Keeping your kitten's tummy as happy as possible takes a few simple steps. Here's how to support your kitten's GI tract.
Change Food Gradually
If you need to switch your kitten's food, do it slowly over a week by gradually adding more new food to their old food each day.
