This is a specific conversation about Anxious Dog — ask about yours and get one honest answer for your exact situation.
inparticular.ai
So the valerian treats have stopped pulling their weight — that does happen, especially with long-term use. Before I suggest where to go next, can you tell me what the anxiety actually looks like in your Norwich Terrier? Is it triggered by specific things, or is he generally unsettled throughout the day?
It's mainly separation anxiety — he hates being left alone. We've had him on the valerian treats for about 18 months and they definitely helped at first, but over the last couple of months he's back to whining and pacing when we leave.
inparticular.ai
That timeline makes sense. Valerian can lose its edge with consistent use — it's not that it's a bad product, it's just that the calming effect tends to plateau. For separation anxiety specifically, you want something that works on a different mechanism altogether. How does he manage the rest of the day when you're home? Calm, or still a bit tightly wound?
Pretty calm when we're around. It's specifically the leaving that sets him off. He's 7, so not a young dog — not sure if that changes things.
inparticular.ai
Age is actually helpful information here — at 7, a Norwich Terrier is solidly middle-aged, which means his anxiety patterns are well established. That points me toward Zylkene rather than anything herbal. It's a milk protein derivative — alpha-casozepine — that works on the same receptors as some anti-anxiety medications but without sedation or habituation. It's given daily, not just situationally, which is what you need for separation anxiety. It's also a capsule you can open and mix into food, so no fuss. It's made by Vetoquinol and widely used by vets. I'd start him on the 75mg dose given his size.
I've heard of Zylkene but thought it was more for one-off stressful events. Does it actually work for ongoing daily anxiety?
inparticular.ai
It's often marketed for events like fireworks or travel, but it's just as effective used continuously for chronic anxiety — that's how many vets actually prescribe it. The key is consistency: it builds up over about a week to ten days before you see the full effect, so don't judge it in the first few days. Give it a solid four weeks. If you want to layer something in alongside it, an Adaptil diffuser in the room he waits in can complement it well, but Zylkene alone is a solid starting point and a proper step up from valerian.
That sounds worth trying. I'll look for the 75mg version. Is there anything I should know before starting him on it?
inparticular.ai
It's well tolerated — no known drug interactions and safe for long-term use, so no need to wean on or off. The only thing to watch is that it's derived from cow's milk, so if your dog has any dairy sensitivity, keep an eye on his digestion in the first week. Other than that, just give it daily with food and be patient with the build-up period. You should notice a meaningful difference by week three.
