Premium Immune Support Supplements with Wild Norwegian Salmon
Cats are famously sensitive to change — a new pet, a move, even rearranged furniture can be genuinely stressful for them, and stress can affect immune function. O2Pets' immune support collection for cats brings together our Cat, Kitten and Senior 7+ formulas, built on Norwegian salmon oil with ingredients chosen for each life stage.
Why Cats' Immune Systems Need Extra Support
Cats are creatures of routine in a way dogs often aren't, and that sensitivity extends to their immune system — stress hormones released during a stressful change in environment or routine can suppress immune response for a period. Multi-cat households add another layer, since close contact means minor illnesses pass between cats more easily. Senior cats face a natural decline in immune resilience on top of all of this, making it the life stage where support tends to matter most.
What's in These Formulas
The Cat formula combines Norwegian salmon oil with krill, freeze-dried cranberries, beta-carotene and vitamin E, which provide antioxidant protection against oxidative stress. The Kitten and Senior 7+ formulas add yeast-derived free nucleotides, which support the intestinal lining — relevant because a large share of a cat's immune activity is coordinated in the digestive tract. Algae oil provides plant-based DHA, and the Senior 7+ formula also includes Boswellia and devil's claw extracts for joint comfort. It's the same foundation behind our broader Natural Supplements range.
When to Consider Immune Support for Your Cat
Senior cats, kittens, cats recovering from illness, cats in multi-cat households, and cats going through a stressful change — a move, a new pet, a schedule disruption — are the situations where owners most often look for added support.
Translation missing: en.sections.collection_seo_content.faq_heading
Yes — cats are especially sensitive to routine disruption, and stress hormones released during change (a move, a new pet, a schedule shift) can suppress immune response.
Recurring minor illnesses, slow recovery from being unwell, or a cat going through an unusually stressful period are the most common reasons owners start looking into immune support.
It's formulated for ongoing daily use, not just short-term illness recovery. Check with your vet if your cat is on medication or a therapeutic diet.
Similar to dogs, a large portion of a cat's immune activity is coordinated in the gut — which is why our Kitten and Senior 7+ formulas include yeast-derived nucleotides that support the intestinal lining.
Yes — the Kitten formula is made for the early months and is dosed for a kitten's smaller size.
Every cat is different, but most owners judge results after several weeks of consistent daily use.
Expert advice
We will give an advice and help you select the oil with the consideration of your pet's individual needs and peculiarities
Expert advice
Tell us about your pet and we will help you choose the right product