Zylkene Anxiety & Behaviour Capsules

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“Post original prescription to: PO Box 999, Tweed Heads, NSW 2485”

$31.95 - $66.95

Zylkene Capsules are a complementary feed designed to help cats and dogs manage stressful situations. Zylkene contains a natural product derived from casein, a protein in milk, that is well known to promote the relaxation of newborns after breastfeeding. Zylkene is palatable and easy to give: simply mix with food or give the whole capsule. It can be given daily and is both preservative and lactose free.

  • Zylkene Capsules contain a palatable, water soluble powder that appeals to both dogs and cats
  • Zylkene Capsules can be given whole or can be opened and the powder mixed with food, treat or liquids
  • Water should be available at all times
  • As Zylkene is taken orally, it is present wherever the pet goes, both inside and outside the house

Since its launch Zylkene has become a familiar product for veterinarians, behaviourists, nurses and pet owners world wide. It helps pets cope when facing unusual and unpredictable situations and can be used before occasions such as a change in their normal environment.

When to use Zylkene

Zylkene can help support dogs and cats in situations where they find they need to adapt their behaviour to cope. These can include kennel and cattery stays, moving house, the arrival of a new pet or baby, sudden noises such as fireworks, travel or festivities. Many cats do not cope well in a multi-cat household, so Zylkene can help with the introduction of a new cat.


Zylkene is easy to give in one daily intake. The capsules contain a palatable, water soluble powder that appeals to both dogs and cats. They can be given whole or opened and the powder mixed with food, treats or liquids. Since Zylkene is taken orally and ingested, it is present wherever the pet goes, both inside and outside the house. Water should always be available to your pet.

Zylkene comes in three strengths:

  • Zylkene Capsules 75mg (30 capsules)
  • Zylkene Capsules 225mg (30 capsules)
  • Zylkene Capsules 450mg (30 capsules)

Dosage Guide

For short term use: Begin administration 1-2 days before the predicted event or change in environment. Some animals may need earlier administration (5-7 days).

For long term use: Start giving Zylkene for one month then reassess the pet. Association with a behaviour modification program may help in these situations.

Capsule Strength Weight Daily Dose
Zylkene 75mg 0-5kg 1 capsule
Zylkene 75mg 5-10kg 2 capsules
Zylkene 225mg 10-15kg 1 capsule
Zylkene 225mg 15-30kg 2 capsules
Zylkene 450mg 15-30kg 1 capsule
Zylkene 450mg 30-60kg 2 capsules

Safety Information

  • It is recommended that you consult your vet before administering Zylkene
  • Can be used short term or for longer periods of time (after consideration of other potential causes)
  • Can be given to nursing queens or bitches, as well as to kittens and puppies
  • Not designed to replace a veterinary behavioural consultation
  • Not suitable for severe anxiety or behavioural problems
Anxiety & Stress

118 Reviews Hide Reviews Show Reviews

  • 5


    Posted by Cory on 15th Oct 2021

    My staffy has been on this for nearly a week now. I have already noticed he is calmer and not having a conniption when the cats come near him.

  • 5


    Posted by Cynthia Macdonald on 24th Sep 2021

    Best product. I highly recommend this. It’s changed my anxious old dog.

  • 5

    Calmer girl

    Posted by Glenys on 23rd Sep 2021

    My dear 2yr was very stressed with her younger sister having her first 'heat'. Zylkene made a big difference to her stress levels.

  • 1


    Posted by Leanne on 17th Sep 2021

    The product is great but Pet Circle takes about a week to tell me it's not in stock. I'll be shopping elsewhere.

  • 5


    Posted by Les Harris on 2nd Sep 2021

    Our puppy has been on Zylkene for a month as she is nervous from being rehomed 4 times. I would say there is no instant change however, she has been calmer recently, and we will continue her on the Zylkene. A win for her and us.

  • 5

    Works so well on our Boxer

    Posted by Ruth on 31st Aug 2021

    I bought these as recommended by the vet when my Boxer's anxiety started to become a problem when out near other dogs. After so many dogs going for her over time she has become anxious and nervous and now reactive. After 2 days we noticed how much calmer she was and was happy to stand by me when other dogs were playing around us. She still can be reactive but I can now see when she is getting to anxious compared to before the tablets. With training and Zylkene Im so much more confident when out in public with her.

  • 4


    Posted by Helen Widger on 26th Aug 2021

    I am purchasing this product as my vet thinks it will hopefully calm the anxiety in my 2 Dingo cross pups. The jury is out at the moment as I think they need a little longer to see the effects.

  • 3


    Posted by Lesley Henderson on 25th Aug 2021

    I really wish there was 30 in the bottle instead of 29 constantly otherwise it’s a great product and Pet Chemist Online is excellent!

  • 4


    Posted by Jean Coward on 16th Aug 2021