As an Amazon Associate, PetHealthLog earns from qualifying purchases at no extra cost to you. This is general information, not veterinary advice — a cat that won't eat for 24–48 hours is a medical emergency. Call your vet.
When your cat picks at food or stops eating, which over-the-counter high-calorie gels, weight-gain powders, and tempting toppers can help — and when you truly need the vet instead.
Quick answer: Over-the-counter "appetite stimulant" products for cats are mostly high-calorie gels, weight-gain powders, and irresistible food toppers that pack calories and aroma into a few licks — helping a finicky or recovering cat take in nutrition while their appetite recovers. A calorie-dense powder or gel is the most practical daily helper; a lickable broth topper can coax a reluctant cat to start eating. These are not the same as prescription appetite stimulants like mirtazapine (Mirataz) or capromorelin (Elura), which only a vet can prescribe. Crucially, a cat that refuses food for more than a day or two needs a vet, because cats can develop dangerous fatty-liver disease (hepatic lipidosis) when they stop eating.
It helps to know the difference before you buy:
For many cats, a vet will combine the two: a prescription to switch appetite back on, plus a calorie-dense supplement to maximize every bite.
| Product | Best for | Format |
|---|---|---|
| Under the Weather Ready Cal (Cats) | Weight gain & energy | High-calorie powder |
| Tomlyn Nutri-Cal Gel | Quick calorie boost | Lickable gel (cats & dogs) |
| SPOT Lickable Broth | Tempting a fussy cat to start | Broth topper |
A calorie-dense powder formulated specifically for cats and marketed as a weight-gain and energy booster. You sprinkle it onto or mix it into food, so a small, reluctant eater still takes in meaningful calories. A practical everyday helper for cats that are underweight, recovering, or just picking at meals.
Check price on AmazonA long-trusted, palatable gel that delivers concentrated calories plus vitamins in a few licks. Cats often lick it straight from your finger or off a paw, which makes it handy when a cat won't approach the bowl. Note: this is a cross-species supplement — check the label flavor and dosing, and confirm the cat-appropriate amount with your vet.
Check price on AmazonNot a calorie supplement but a powerful enticement: an aromatic, vitamin-enriched broth you drizzle over food (or offer on its own) to spark interest in a fussy or under-the-weather cat. The strong fish smell and added moisture can be the nudge that gets a reluctant cat licking again — a useful first step before a full meal.
Check price on AmazonOTC products mostly work by making eating easier and more tempting — concentrated calories, strong aroma, and lickable textures — rather than chemically switching on hunger. They can genuinely help a finicky or recovering cat take in nutrition, but they don't address why appetite dropped. For true pharmacological stimulation, a vet may prescribe mirtazapine or capromorelin.
Not long. A cat that eats little or nothing for more than 24–48 hours should see a vet, because fatty-liver disease can set in quickly — especially in overweight cats. Don't wait it out.
Some gels are labeled for both cats and dogs, but cats have unique needs (for example, they require taurine and are sensitive to certain ingredients). Always check the label or ask your vet before giving a dog product to a cat.
Try warming wet food to release aroma, offering strong-smelling foods, hand-feeding, keeping the bowl away from the litter box, and reducing stress. If these don't work within a day or so, treat it as a reason to call the vet rather than keep experimenting.
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