Kalmvet Stress and Anxiety Relief Supplement for Dogs and Cats – Promotes Relaxation with Chamomile, L-Tryptophan, and Valerian Root Extract 60 Twist off Capsules

These are reasonably good but contain something like a third of the active ingredients found in their big brother, KalmVet Advanced capsules. I found the advanced version for sale online for about £30 per bottle, but had to then pay for shipment to the UK from mainland Europe which took some time. The Advanced capsules are most definitely better and more effective than these ones. They are more pricey, sadly. But I've since found the Cat FurNature - Calming L-Tryptophan capsules on Amazon, which contain about the same dose of the Advanced capsules for a third of the cost. So I would go straight to the Cat FurNature capsules, which my cats were more than happy to eat (I tipped the capsule contents onto their dinners and mixed them in), and which were just as effective as the KalmVet Advanced capsules.

This item it's on end best before date. It's not good enough

Not really sure they help my dog, strange to open. They come in a tear shaped capsule that you snip the end off and squeeze the brown content onto the food. Bit fiddly for me, and don't leave them where it's warm...they melt into each other. Personally I prefer my usual brand.