Cat food for sensitive stomachs

Digestive sensitivity in cats is more often food intolerance than true allergy, and limited-ingredient or novel-protein diets tend to be the most effective fix. Before I point you toward anything specific, I'd like to understand what's going on: are the symptoms mainly vomiting, loose stools, or something else? How long has this been happening? And what are you currently feeding?

That's a helpful picture. A few things stand out here. Persians are already prone to vomiting because of their flat faces — they tend to swallow air when eating, especially with kibble. Add a long-term diet of the same supermarket food and there's a real chance of a low-grade intolerance that's built up over time. The extra weight and sedentary lifestyle matter too: indoor older cats burn fewer calories and can develop sluggish digestion. Can I ask — is the vomit mostly undigested food shortly after eating, or more of a bile or liquid vomit at other times?

That confirms a lot, actually. The fast-eating, flat-face combination is classic for Persians, and undigested food vomiting shortly after meals points strongly to that rather than a deep digestive disease. Given her age, weight, and the chronic nature of it, I'd suggest moving her onto Royal Canin Persian Adult dry food. It's specifically shaped for flat-faced cats — the kibble encourages them to pick it up differently, which slows eating and reduces air swallowing. It's also calorie-controlled for indoor cats, which addresses the weight side without you having to portion down too aggressively. The formula is highly digestible with a moderate protein level that's gentle on older guts. It's not a novel-protein diet, but given that her vomiting is mostly mechanical rather than intolerance-driven, this is the more targeted fix. One thing to do: transition slowly over 10 days — mix it in gradually to avoid triggering more vomiting from a sudden switch.

At 10, it's always worth having a vet check kidney function and thyroid — both become more common in older cats and can cause vomiting. If the food change doesn't improve things within three to four weeks, or if you notice weight loss, increased thirst, or lethargy, I'd get bloodwork done. But chronic vomiting with the specific pattern you're describing — post-meal, undigested, in a Persian — is very commonly mechanical and dietary. Start with the food change, track whether the frequency drops, and use that information if you do end up at the vet.

Good plan. Give it a full month before judging — digestive patterns take time to settle after a diet change. If the vomiting reduces even partially in the first two weeks, that's a good sign you're on the right track. Hope she's feeling better soon.