Calming products for cats in Canada are not all treats. Some are soft chews, one is a capsule you open onto food, one is a probiotic powder, one is a liquid and one plugs into the wall. They do not share ingredients either, so two bags that both say "calming" can be very different things. The table below sets out what each maker or Canadian retailer publishes, so you can compare them side by side.
We are Trueleaf Petcare, and our Calming Support Chews for Cats are in the table. Every row is limited to what the brand or a Canadian retailer publishes, and the products are listed in alphabetical order.
Which calming treats and supplements for cats are sold in Canada?
| Product | Format and size | Main listed ingredients | What the label says for a typical cat | Price seen (CAD) |
|---|---|---|---|---|
| Feliway Classic Diffuser Starter Kit | Plug-in diffuser with a 48 mL refill | Feline facial pheromone analogue 2%. Not eaten | Plug in where your cat spends the most time and leave it on. A refill lasts up to 30 days | $42.99, Homes Alive |
| NaturPet Be Calm (cats and dogs) | Liquid, 100 mL | Ashwagandha, valerian root, horsetail, black cohosh, lemon balm, passionflower. Amounts not listed | 0.5 mL twice a day up to 25 lb. The label says not for long-term use unless a vet directs | $46.99, Homes Alive |
| NaturVet Quiet Moments Plus Melatonin (cat) | Soft chew, 60 | Per 2 chews: L-tryptophan 50 mg, chamomile 6 mg, thiamine 6 mg, ginger 1 mg, melatonin 0.01 mg | 2 chews 30 minutes before an event, no more than 4 in 12 hours | $16.99, Homes Alive |
| Purina Pro Plan Veterinary Supplements Calming Care (cat) | Powder, 30 sachets | Per sachet: the probiotic Bifidobacterium longum BL999, 1 billion CFU, and vitamin E 100 IU | 1 sachet a day on food, or as your vet directs | $44.99, Pet Valu |
| Trueleaf Calming Support Chews for Cats | Soft chew, 50g bag of 100 | L-theanine, lemon balm extract, hemp seed oil. Contains fish | 2 chews a day for 5.1 to 10 lb | $9.99, trueleaf.com |
| Under the Weather Calming Soft Chews for Cats | Soft chew, 60 | Per 2 chews: thiamine 65 mg, L-tryptophan 10 mg, L-theanine 8.5 mg | Under 15 lb: 2 chews a day | $27.54, Homes Alive |
| V Supplement Chews for Cats, Calming (Homes Alive's own brand) | Soft chew, 80 | Per chew: thiamine 35 mg, L-tryptophan 10 mg, lemon balm 5 mg, L-theanine 5 mg | 1 chew a day | $19.99, Homes Alive |
| VetriScience Composure (Calm & Confident) for cats | Soft chew, 30 | Per chew: thiamine 67 mg, colostrum calming complex 11 mg, L-theanine 10.5 mg | 1 or 2 chews, daily or as needed | $17.00, iHerb Canada |
| Zylkene 75 mg (Vetoquinol) | Capsule, 30. Can be opened onto food | Alpha-S1 tryptic casein 75 mg per capsule, a milk protein ingredient | Under 5 kg: 1 capsule a day. 5 to under 10 kg: 2 capsules. Start 1 to 2 days before a planned event | $23.71, The Pet Pharmacist |
Prices are what we saw on the named retailer's site on November 9, 2026, using the regular price where an item was on sale. They change often.
What are the main calming ingredients for cats?
Read enough labels and the same few names keep turning up.
- L-theanine. An amino acid found in tea leaves. It is in four of the chews above, including ours.
- L-tryptophan. An amino acid found in protein foods such as poultry and fish.
- Milk protein ingredients. Zylkene uses alpha-S1 tryptic casein, and Composure uses a colostrum blend.
- Thiamine. Vitamin B1. Several chews list more of it than anything else.
- Probiotics. Calming Care is one bacterial strain in a powder, with no herbs or amino acids at all.
- Herbs. Lemon balm, chamomile, valerian, passionflower and ashwagandha, alone or in blends.
- Pheromone analogues. Feliway copies a scent cats leave when they rub their cheeks on things. Your cat does not eat it.
VCA Animal Hospitals says L-theanine, alpha-casozepine and tryptophan show some promise for cats, but the studies are small and there is no standard testing requirement for these products. That is a fair summary of the whole shelf: plausible, lightly studied, and different from cat to cat.
How much does each one cost per day?
Bag prices hide a lot, because the daily amounts are so different. Here is the maths for a 10 lb cat, using the label amounts and the prices in the table.
| Product | How long one pack lasts a 10 lb cat | Cost per day |
|---|---|---|
| Trueleaf Calming Support Chews for Cats | 50 days at 2 chews a day | About $0.20 |
| V Supplement Chews for Cats, Calming | 80 days at 1 chew a day | About $0.25 |
| NaturPet Be Calm | 100 days at 1 mL a day | About $0.47 |
| VetriScience Composure for cats | 15 to 30 days at 1 or 2 chews a day | About $0.57 to $1.13 |
| Zylkene 75 mg | 30 days at 1 capsule a day | About $0.79 |
| Under the Weather Calming Soft Chews | 30 days at 2 chews a day | About $0.92 |
| Feliway Classic Diffuser Starter Kit | Up to 30 days per refill | About $1.43 for the first month |
| Purina Calming Care | 30 days at 1 sachet a day | About $1.50 |
NaturVet Quiet Moments is not in this table because its label is written for use before an event, not every day. A bag is 30 uses, at about $0.57 each.
Cost per day tells you what you will spend. It does not tell you which one will suit your cat, because the ingredients and amounts are not the same.
What does "Veterinary Health Product" mean on a cat supplement?
Health Canada describes Veterinary Health Products as low-risk products used to maintain or promote the health and welfare of animals. A company notifies Health Canada before selling one, and a notified product is issued a notification number that starts with NN. Health Canada is also clear about the limit: these products cannot claim to treat, cure or prevent disease.
So look for the NN number on the pack, and be wary of any calming product that promises to fix a medical or behaviour problem. That is a job for your veterinarian.
When should a cat see the vet before trying a calming treat?
International Cat Care's advice is simple: any behaviour that is not normal for your cat is a reason to call the vet, because illness and long-term pain can be behind it. The Cornell Feline Health Center says the same about a cat that stops using the litter box, and notes that cats with medical conditions may not act sick.
A calming chew is for a cat who is basically well. It works alongside the basics: hiding places, high perches, a steady routine, and separate food, water and litter.
Where does Trueleaf fit?
Trueleaf Petcare is a Vernon, BC company that makes veterinarian-formulated soft chews for dogs and cats in its own facility. Our cat chews are their own formulas, not smaller doses of our dog chews.
Calming Support Chews for Cats combine L-theanine and lemon balm with hemp seed oil to support calm behaviour. A 10 lb cat takes 2 chews a day, so a 50g bag of 100 lasts 50 days. They contain fish. There is also a 3-pack if your cat has decided they are snacks.
Our guide on how much to give a cat lists every weight band, and hairball and calming chews for cats in Canada compares hairball products the same way.
Common questions
Are calming treats for cats given every day or only before an event?
It depends on the label. Most of the chews above, including ours, are daily. NaturVet Quiet Moments is written for use before an event, and the Zylkene label says to start 1 to 2 days before a planned one. Follow the pack you have.
Can I give my cat a calming chew made for dogs?
No. Use a product labelled for cats. Dog chews are dosed for dogs and can contain ingredients or amounts that are not right for cats. Our guide cat supplements are not small dog supplements explains why.
How do I know if a calming treat is doing anything?
Count something before you start. How many times your cat hides when the doorbell rings, or how long it takes them to come out after visitors leave. Write it down for a week, give the product daily at the label amount for a few weeks, then count again. Cats are excellent at keeping their opinions to themselves, so a number beats a hunch.
Product details checked on November 9, 2026, from each brand's website, a published label or the Canadian retailer named in the table. Labels change, so check the pack before you buy.
