This is a specific conversation about Dog supplements — what's actually worth it — ask about yours and get one honest answer for your exact situation.
inparticular.ai
The supplement market for dogs is enormous and mostly unnecessary — most healthy dogs on a complete diet don't need anything extra, and the ones that do usually need something specific rather than a broad multivitamin. That said, cognitive changes in older dogs are a real thing, and there are a handful of nutrients with decent evidence behind them. What breed and age is your dog, what are you noticing that's prompting this, and has your vet ruled out anything medical?
She's a 12-year-old West Highland Terrier. She's just seemed a bit vacant lately — staring at walls, sometimes seems confused about where she is in the house, sleeping more, less interested in things she used to enjoy. Vet checked her over and said there's no obvious physical cause, likely just age-related cognitive changes. He mentioned something about cognitive dysfunction syndrome but said supplements were worth trying.
inparticular.ai
That picture — the wall-staring, the spatial confusion, the reduced engagement — fits canine cognitive dysfunction pretty closely. It's essentially the dog version of dementia, and it's genuinely common in Westies at 12. The good news is your vet is right that certain supplements have reasonable evidence behind them, and you're not wasting your time here. Before I point you somewhere specific: is she on a dry complete food, and has she had any bloodwork done recently? Some of what you're describing can also overlap with thyroid issues in Westies, so I want to make sure that's been looked at.
Yes, bloodwork came back fine and thyroid was checked specifically because the vet said the same thing. She's on a good quality dry complete food. No other health issues really, she's physically pretty well for her age.
inparticular.ai
Good — thyroid ruled out and on a complete diet means you're in the right place to think about targeted cognitive support. The two ingredients with the strongest evidence for canine cognitive dysfunction are phosphatidylserine and omega-3 fatty acids, particularly DHA. Phosphatidylserine supports cell membrane integrity in the brain, and DHA is the structural fat that neurons actually run on. There are products that bundle these together and are formulated specifically for this use. The one I'd point you to is Aktivait for dogs — the medium/large dog version contains both phosphatidylserine and omega-3s alongside some supporting antioxidants, and it's been used in clinical settings for CDS in the UK. It's available on Amazon UK and is one of the few products in this space I'd actually recommend without caveats. Give it eight weeks consistently before you judge it — cognitive supplements work slowly if they work at all.
That's really helpful. Should I tell my vet I'm giving it to her, or is it fine to just start?
inparticular.ai
Always tell your vet, yes — not because there's any meaningful risk with Aktivait, but because it becomes part of her record and your vet can track whether the cognitive symptoms are progressing or stabilising over time. It also means if they want to consider a prescription option like Selgian (selegiline) down the line, they have context. Aktivait is safe alongside most things, but your vet knowing what she's on is just good practice. Keep a simple diary of the behaviours you're seeing — the wall-staring, the confusion episodes — so you have something concrete to report back on.
Will do. And is there anything else I should be doing alongside the supplement?
inparticular.ai
Yes, and honestly the non-supplement stuff may matter as much as what's in the capsule. Mental stimulation — short sniff walks rather than fast ones, simple puzzle feeders, keeping her routine very consistent — all help maintain cognitive function in dogs with CDS. Avoid rearranging furniture if you can, because spatial familiarity is reassuring when navigation is harder. Keep her engaged without overwhelming her. The supplement gives you something to work with biologically; the environment gives her brain a reason to keep working. At 12 with no other health issues, you're in a genuinely decent position.
