Purina One senior cat food
Purina One's senior range is a cat food, not a dog one — formulated for cats aged seven and over, when metabolism and digestion typically start to change. It is a mainstream, widely available range rather than a prescription diet, aimed at supporting an ageing cat through everyday feeding rather than managing a diagnosed condition.
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What we stock, and what 'senior' changes
Our range includes Purina One Senior 7+ Bifensis Chicken and Purina One 7+ Senior Cat Salmon in dry food, alongside Purina One Pouches 7+ Senior Cat Mini Fillets in Gravy for wet feeding. Senior cat food is typically adjusted for lower activity levels and easier digestion compared with an adult recipe, and Purina's Bifensis line specifically targets digestive health, which is a common consideration as cats age.
Age seven is a guideline rather than a strict switch-over point — some cats are still very active at that age and do fine on an adult recipe for longer, while others benefit from a senior formula earlier. Watching your cat's weight, coat and energy levels is a better guide than the number on the calendar alone.
Who it suits
This is a sensible everyday choice for an older cat without a diagnosed health condition, offered in both dry and wet formats so you can choose based on your cat's preference or mix the two. It is not a prescription or veterinary diet, so a cat with a diagnosed kidney, thyroid or other condition needs a food specifically suited to that, on your vet's advice.
As with any change of food for an older cat, introduce it gradually rather than switching overnight, and keep an eye on appetite and weight in the weeks after — a cat who goes off a new food, or loses weight unexpectedly, is worth a vet check rather than assuming it will settle.
This range
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

Purina One Pouches 7+ Senior Cat Mini Fillets in Gravy 40pk
A 40-pouch box of complete wet food for senior cats, mini fillets in gravy, mixed flavours
£18.15

Purina One Senior 7+ Bifensis Chicken
Senior cat dry food (7+) with added Bifensis probiotic and a weight-based feeding guide
£46.45

Purina One 7+ Senior Cat Salmon
A complete dry food for cats aged 7 and over, built around salmon
£17.37

Purina One Senior 7+ Chicken 2.8kg
Senior cat dry food (7+), chicken recipe, in a smaller 2.8kg bag
£19.29

Purina One Kitten Chicken
Chicken kitten food with added DHA, and a feeding guide from 6 weeks to a year
From£6.65

Purina One Sensitive Cat Turkey
A complete dry food for cats with sensitive digestion, built around turkey
£19.29

Purina One Bifensis Chicken
Complete dry cat food with chicken and a gut-health probiotic blend
£44.25

Purina One Adult Cat Urinary Health Chicken
Purina ONE's urinary health recipe for adult cats, chicken-based, 750g bag
£6.65

Purina One Adult Cat Chicken
Complete dry chicken food for adult cats, with 34% protein and a chicory prebiotic
£3.99

Purina One High Protein Salmon Dry Cat Food
A 40% protein dry cat food led by salmon, though it still contains chicken protein
£6.19

Purina One High Protein Chicken Dry Cat Food
A 40% protein dry cat food, chicken-based, with a separate feeding guide for neutered cats
£6.19

One Purina One Light Cat Chicken
A weight-management dry cat food with chicken, 37% protein and reduced fat for cats watching their weight
From£6.65
Common questions
- At what age should I switch my cat to senior food?
- Around seven is the usual guideline, but it is not a strict rule. Some cats do fine on adult food well past that age, while others benefit from switching earlier — watching their weight, coat and energy is a better guide than age alone.
- Is Purina One senior food suitable for cats with health conditions?
- It is a mainstream everyday food rather than a prescription diet. A cat with a diagnosed condition such as kidney disease needs a food specifically formulated for that, on your vet's advice, rather than a standard senior recipe.
- Should I feed dry or wet senior cat food?
- Either works as a complete food, and many owners mix the two. Wet food carries more moisture, which can help an older cat who does not drink much, while dry food is easier to portion and leave down for longer.
- How do I switch my older cat onto a new food?
- Introduce it gradually over a week or so, mixing in increasing amounts with their current food rather than swapping outright, and watch their appetite and stools as you go. If they go off their food or lose weight, speak to your vet.
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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.