Free delivery options available over £29*
Capsules for Dogs » Pack of 12
Liquid for Cats » 60ml Dropper Bottle
Sachets for Horses » 24 x 60g Sachets

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  • Capsules for Dogs » Pack of 12 £12.49
  • Liquid for Cats » 60ml Dropper Bottle £17.50
  • Sachets for Horses » 24 x 60g Sachets £54.36

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£12.49 to £54.36


Calmex is a unique product, formulated to encourage stress relief in dogs, cats and horses. It is can be particularly useful in situations like transport, lifestyle changes, veterinary visits, boarding/kenneling and challenging environments which may make them fearful or anxious.

Calmex contains a unique combination of two amino acids (L-theonine and L-tryptophan) a plant extract (from Piper methysticum) and a range of B vitamins which promotes a more positive mental disposition. Calmex comes in capsules for dogs, liquid for cats and sachets of powder for horses.

Feeding Guidelines

Cat Liquid

1ml per 4.5kg of body weight twice daily, or as recommended by your veterinary surgeon

Dog Capsules

Administer the dose 30-60 minutes before the desired effect is required.

Under 10kg - ½ capsule

10-25kg - 1 capsule

Over 25kg - 2 capsules

Equine Sachets

Body Weight Daily feed amount
Up to 350kg (pony) Half sachet
351 – 600kg (horse) One sachet
Over 601kg (large horse) One and a half sachets

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 8:30am - 5:00pm
  • Sat: 9:00am - 1:00pm (Collections only)
  • Email: [email protected]

All prices include VAT where applicable.

Delivery Information

How quickly do you deliver?

Under almost all products on our website is an Estimated dispatch time, check this for a delivery prediction specific to the item you are looking to purchase. These badges are updated live based on the stock levels we have and also those of our suppliers - so are usually very accurate, but cannot be guaranteed. In more general terms, we aim to dispatch all orders within 1 working day of receiving payment (and a prescription if required). If we cannot do so within 3 working days we will contact you by email.

What do you charge for delivery?

For UK delivery, we charge the following:

Order Total Weight Delivery
£0-£28.99 Under 2kg £2.99
2kg+ £4.99
£29-£38.99 Under 2kg Free
2kg+ £4.99
£39+ Under 2kg Free
2kg+ Free

Prices quoted are for delivery to all parts of mainland UK except certain Scottish postcodes (where the price is higher for items sent by courier. Delivery of food abroad (including Channel Islands, N. Ireland and other islands around the UK) is charged at a higher price and free delivery is not available. Temperature controlled products are also not always subject to the standard and/or free delivery options.

For full information on our delivery charges, including prices on heavy deliveries to Scotland and abroad, see our delivery information page.

We can deliver most items to all around the world, but prices do vary. To find the exact cost of shipping your item, and to see all options available, follow these steps:

  1. Put the items you wish to order in your basket
  2. Proceed to checkout and enter your delivery address, including country
  3. Delivery information including price will automatically update to what is available to you

Delivery of aerosols

Due to restrictions aerosols can't be sent by Royal Mail. We appreciate your understanding.

Delivery of temperature controlled items

Some products, such as non-ambient items and frozen food, need to be delivered in insulated packaging to prevent them from getting too warm (or too cold) during transit from us to you. Purchasing any of these items in your order will result in a £1.99 charge being added to the total to cover the high cost of the insulated packaging materials. You only pay the £1.99 once per order, regardless of how many temperature controlled items you purchase in that order.

How do I cancel or return an order?

Please call us as soon as possible if you need to amend or cancel an order on 01582 842096. If your order has been processed for dispatch we will be unable to cancel or amend the order. You will however be able to return your product for a full refund*.

To return an item, you must contact us by phone or email to arrange this BEFORE posting any product back to us. We will explain the process at this stage for you.

*For full details on returns, see our terms and conditions page.

Reviews (72)

Q & A

Below are some recent questions we've received regarding Calmex, including answers from our team.

26 March 2019 at 8:36pm

Calmex and travel anxiety

Helen Phillips

  • VioVet customer since 2013
  • From: West Sussex, United Kingdom

How soon befor travel should I give our basset calmex ? He has cronic travel anxiety. Is there anything else that we can use along with calmed? A friend suggested adaptil?

  • Website Content Developer

Hi Helen,

You need to administer the dose 30-60 minutes before the desired effect is required.

Hope this helps.

28 June 2017 at 10:57am

Dosage query


I have an 8.6kg shih tzu
What would his dosage be - how many tablets and how often can I give him his tablets
We have a very long car journey 6-7+ hrs

  • Veterinary Advisor

The dose for your dog would be half a capsule given 30-60 minutes before the start of your journey. The dose can be given twice daily. Supplements like this seem to be very effective for some dogs and not at all for others. If your dog gets particularly anxious travelling it may be worth speaking to your vet about something stronger.

15 April 2016 at 6:17pm

How long do the effects last for

Claire Mattick-Rylands

  • VioVet customer since 2015
  • From: Devon, United Kingdom

How long does the product last once taken?

  • Non-Executive Director

This will normally be for a few hours, but it varies between different animals, with some showing a more obvious effect than others. Very excited animals may not show an obvious response at all, especially when stressed.

28 September 2015 at 4:09pm

Calmex along side adapti

Daniel McCormack

  • VioVet customer since 2015
  • From: Greater Manchester, United Kingdom

I was wondering can I use the calmex tablets along side adaptil products such as the diffusers and collar ?

  • Non-Executive Director

Yes you can safely do this and sometimes combining products with very different modes of action can work well. As with all products like this, you will not really know what the results will be until you try them. It could be worth a try.

16 August 2015 at 10:09pm

Calmex for overgrooming?

Julie Bailey

  • VioVet customer since 2011
  • From: Leicestershire, United Kingdom

My cat has a problem with stress, he often over grooms and sometimes urine marks inside my house! I currently give him Zylkene which doesn't make much difference to his behaviour, have also tried Feliway, did not work either. Would Calmex be more suitable?

  • Non-Executive Director

This is a difficult problem to treat because the causes for the stress vary between cats and some individuals will respond better to one treatment than another, but not all cats will respond to the same product. Generally I find that the Feliway products are the most effective, but you might need to provide a diffuser for each room.

It is worth bearing in mind that the most stressful thing to a cat is usually another cat. It is sometimes possible to try and think of things from your cat's point of view and reduce the amount of stress they feel from neighbour's cats, or indeed your own other cats if you have any. Re-positioning things like food bowls, litter trays and sleeping areas can help sometimes.

6 April 2015 at 8:56pm

Calmex used in welping bitch

VioVet Visitor

My bitch is feeding 7 puppies at the moment, she's gett very stressed when possible buyers come and visit could I use calmex on her??

  • Non-Executive Director

It is safe to give Calmex to lactating bitches and it might well help. I would suggest using an Adaptil diffuser in the room too, which is completely safe and certainly helps some dogs a lot.

16 March 2015 at 3:54pm

Calmex and parrots

can calmex be used for parrots

Can calmex be used for parrots with screaming problems?What will be the dosage for birds under 500gr? (African grey cockatoo)

  • Non-Executive Director

This can be tried in parrots, but it may or may not make any difference. It is safe enough and you could give a dose of 0.1mls once or twice daily for an African Grey or a similarly sized cockatoo.

9 February 2015 at 3:00pm

Calmex long term?


Can my dog be on calmex long term? and would there any side effects from taking it long term.

  • Non-Executive Director

Calmex is perfectly safe and can be used long-term. We would not expect any side effects, though it is possible that the beneficial calming effect would be reduced in time.

7 January 2015 at 8:24pm

Calmex dosage or other product


Hi. I have a border terrier that suffers from intermittent panic attacks and is quite nervous generally. She responds well to calmex during an attack but just wondered if there is another product safe to use daily at a lower dose to keep her more settled day to vet advised to give her half a calmex capsule but the other half is generally wasted as you have to break open the capsule and enevitably it spills out on the floor....making it more expensive.
Alternatively, as we know it works, could I give her the calmex syrup instead and what dose would be a good daily maintenance dose?

  • Non-Executive Director

I would keep the Calmex to treat an episode as and when it occurs. For general, every day use you might find that a Thunder Shirt, or Scullcap & Valerian Tablets would help a lot. I would try one or both of those.

15 September 2014 at 5:49pm

Calmex + Feliway

Lauren Richards

  • VioVet customer since 2014
  • From: Norfolk, United Kingdom

Can this be used alongside a Feliway diffuser?

  • Brand Manager

Yes, Calmex and Feliway can be used together to help your cat to feel reassured and calm. They work in different ways- Calmex ingredients support the nervous system and help with serotonin function-a chemical messenger that to promotes the feeling of well-being. Feliway is a synthetic copy of a cat pheromone which they use to mark objects and territory (including their owners) as familiar. The pheromone given off by Feliway will make them feel more at ease with their surroundings, during stressful events and other situations like introducing a new pet.