This is a specific conversation about Cat urinary problems — diet and products that help — ask about yours and get one honest answer for your exact situation.
inparticular.ai
Urinary problems in cats need to be taken seriously — particularly in male cats, where a blocked urethra can become life-threatening within hours. Diet is one of the most powerful tools for prevention and management, especially for cats prone to crystals or struvite issues. If there's an active problem right now, a vet visit really can't wait. That said, I'd love to help you get the diet right. Can you tell me: is your cat male or female, what symptoms are you seeing, has he been to a vet about this, and what are you currently feeding him?
He's a 9-year-old male Domestic Longhair. He's been straining a bit in the litter box and going more frequently, but he is passing urine so no full blockage. He saw the vet last month — they said he has mild struvite crystals and told me to switch to a urinary diet. I'm a student so money is really tight. I'm currently feeding him whatever dry food was on offer, usually Whiskas.
inparticular.ai
Good — the fact that he's been seen and there's no blockage is reassuring, and you're doing the right thing by acting on the vet's advice. Struvite crystals in male cats are very manageable with the right food, and the switch away from Whiskas is genuinely important here. Generic supermarket dry foods tend to be high in magnesium and produce alkaline urine, which is exactly the environment where struvite crystals thrive. What's your rough monthly budget for his food?
Honestly maybe £15–20 a month max. I can't really stretch beyond that.
inparticular.ai
That's workable. My recommendation is Royal Canin Urinary Care Adult dry cat food — the standard adult version, not the prescription S/O. It's not a prescription diet, so you don't need a vet sign-off and it's significantly cheaper. A 2kg bag runs around £14–16 on Amazon UK and lasts a lean adult cat most of a month. It's formulated specifically to reduce urine pH and lower magnesium content, which directly addresses struvite formation. It's not glamorous, but it's the most cost-effective clinically-targeted option on the market. One thing to add: try to get him drinking more water. Dry food alone can concentrate urine, so if you can add a small amount of water to his bowl or occasionally offer a cheap wet food alongside it, that helps dilute crystal-forming minerals.
Would it be better to just go full wet food instead? I've heard wet is better for urinary issues.
inparticular.ai
Wet food is genuinely better for hydration, and for some cats it makes a real difference. The problem is that budget wet food — supermarket pouches — often has worse mineral profiles than a purpose-formulated urinary dry food. You'd be getting more water but from a food that may still be too high in magnesium or the wrong pH. Royal Canin Urinary Care dry plus a bit of added water, or occasionally mixed with one or two cheap wet pouches, gives you the best of both worlds without blowing the budget. If you ever have a month where you can stretch slightly, Royal Canin Urinary Care wet pouches are very good — but the dry is the minimum viable option that genuinely does the job.
That's really helpful, thank you. I'll order the dry food today.
inparticular.ai
Good call. Transition him gradually over about a week — mix increasing amounts of the new food with the old to avoid stomach upset. And keep an eye on the straining: if it gets worse or he stops passing urine entirely, that's an emergency and needs a vet immediately regardless of cost. Most vets have payment plans for genuine emergencies. Hopefully the diet change alone will sort him out — it does for a lot of cats with mild struvite issues.