Cat food for constipation
A cat who is constipated more than occasionally often benefits from more moisture in their diet and a food with adequate fibre, both of which help keep things moving through the gut. Diet is one piece of managing mild, occasional constipation — it is not a fix for a cat who is repeatedly straining or has not passed a stool in more than a day, which needs a vet.
Why moisture and fibre matter
Wet food carries far more water than dry food by weight, and a cat that eats mostly wet food, or has dry food alongside plenty of fresh water, tends to produce softer, easier-to-pass stools than one eating dry food with a poor water intake. Cats are famously poor at drinking enough on their own, which is part of why diet moisture matters more for them than it might for a dog.
Fibre also plays a role, since it adds bulk that helps stool move through the gut. Some foods are formulated with this in mind, and checking the fibre content on the guaranteed analysis on the back of the pack, alongside the moisture content, gives you a rough sense of how a food is likely to affect a cat prone to constipation.
What to look for on a label
Wet food naturally scores higher on moisture than dry food, often 70 to 80% water compared with around 10% in a dry kibble, so a wet food or a mixed feeding routine is usually the simplest first change for a cat prone to constipation. Look at the guaranteed analysis for both moisture and crude fibre percentages when comparing options.
A food described as supporting digestive health, or one formulated around higher fibre, can be worth trying, though no everyday food is a guaranteed fix — some cats need more than a diet change to manage the problem, particularly older cats or those with an underlying condition.
Other things that help alongside food
Fresh water available in more than one place in the house, a clean litter tray a cat is happy to use, and regular gentle exercise can all support healthy digestion alongside diet. A cat avoiding the litter tray because it is dirty or in an inconvenient spot can develop constipation that has nothing to do with what they are eating.
If your cat is overweight, is older, or has had constipation before, mention this to your vet so they can advise on the right combination of diet and management for your cat specifically, rather than trying everything at once yourself.
When it needs a vet, not a food change
A cat straining repeatedly in the litter tray, crying out, passing very hard or no stool for more than a day, or seeming lethargic and off their food needs to be seen by a vet, ideally the same day. Constipation that is left untreated can become a more serious blockage, and repeated episodes can point to an underlying condition that a food change alone will not fix.
Diet is genuinely useful for managing occasional, mild constipation, but it is not the right response to a cat who appears to be in real discomfort. When in doubt, a phone call to your vet costs nothing and rules out anything more serious.
What we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Whiskas 1+ Salmon Adult Dry Cat Food
Complete salmon dry food for adult cats in a practical 1.9KG bag
£12.39
James Wellbeloved Adult Dry Cat Food Turkey
A single-source turkey dry food for adult cats, without the grain-free or joint-support extras
From£21.79
Whiskas 1+ Lamb Adult Dry Cat Food
Complete lamb dry food for adult cats in a practical 1.9KG bag
£12.39
Whiskas 1 Tuna Adult Dry Cat Food
Complete tuna dry food for adult cats, offered in several bag sizes
From£3.19
Whiskas Kitten Chicken Dry Cat Food
Complete chicken dry food for kittens, available in several bag sizes
From£3.19
Whiskas 1 Chicken Adult Dry Cat Food
A complete dry food for cats 1+, with chicken present only in the brown kibbles
From£3.19
Whiskas 7+ Senior Cat Complete Dry with Chicken
Complete chicken dry food for senior cats aged 7+ in a 1.9KG bag
£12.39
Whiskas 7+ Chicken Adult Dry Cat Food
Complete chicken dry food for senior cats aged 7+ in an 800G bag
£6.09
James Wellbeloved Light Adult Dry Cat Food Fish
A lower-calorie fish dry food for adult cats managing their weight, with joint-support ingredients
£24.65
James Wellbeloved Kitten Dry Cat Food Fish
Single-protein fish dry food for growing kittens, excluding common allergens
£21.79
James Wellbeloved Senior Dry Cat Food Turkey
A single-source turkey dry food for senior cats, formulated with added joint-care ingredients
From£21.79
Whiskas 2-12 Months Kitten Complete Dry Food Chicken
Complete chicken dry food for kittens aged 2-12 months in a 7KG bag
£30.15
Common questions
- Does wet food help with cat constipation?
- Often, yes. Wet food carries much more moisture than dry food, and better hydration generally means softer, easier-to-pass stools. Switching to wet food, or adding it alongside dry food, is one of the simplest first changes to try for a cat with mild, occasional constipation.
- Can I give my cat a laxative?
- Only if a vet has specifically advised one for your cat. Human laxatives and remedies are not appropriate for cats, and giving the wrong thing can make matters worse or mask a more serious problem. Speak to your vet before giving your cat anything intended to help them go.
- How long is too long for a cat to go without pooing?
- More than a day without passing a stool, or repeated straining with little or nothing produced, is worth a same-day call to your vet rather than waiting it out. Cats can develop a more serious blockage if constipation is left untreated.
- Are older cats more prone to constipation?
- Yes, constipation becomes more common with age, sometimes linked to reduced mobility, joint discomfort affecting litter tray use, or an underlying condition such as kidney disease. A vet check is worthwhile for an older cat with repeated constipation rather than assuming it is only a diet issue.
Related
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.