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Zylkene Capsules

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  • Free professional veterinary advice
  • All orders have a delivery charge of £6.95
  • 30 days to change your mind with easy returns
  • Customers have given Vetsend a 4.5/5

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  • Product Description

    Versatile

    This product is designed to help cats and dogs during stressful periods and in stressful situations, like being left alone, getting used to a new environment, new people, a new companion, as well as during periods of recovery after medical treatment, milk yield, weaning, holidays, car trips, a fear of fireworks, or at any other time when their daily routine changes. Zylkene Capsules contains alpha-casozepine, which is derived from milk protein.

    What is the effect of Zylkene?

    Zylkene is a complementary nutritional supplement that helps dogs and cats relax during stressful situations, such as fireworks, travelling, moving house or visiting the vet. It contains alpha-casozepine, a natural milk protein that has a calming effect without making your pet drowsy. It is 100% natural and safe for long-term use.

    Zylkene and fireworks

    Fireworks may be one of most stressful things to an animal. When this is true for your pet, it’s wise to start him on Zylkene a few days before New Year’s Eve or Bonfire Night. Giving a higher dose to achieve the wanted result is no problem. 

    Zylkene for persistent behavioural problems

    Constant exposure to stressful situations can cause (permanent) behavioural problems, such as eating disorders or digestive problems, relieving or peeing in the house, anxiety, aggressiveness or stereotypical behaviours (licking, self-mutilation, spinning etc.). Zylkene can also be used effectively in these situations for long-term support.

    Zylkene dosage

    Recommended dosage of Zylkene Capsules 75mg (cats and small dogs)  
    Weight Quantity
    <5 kg 1 capsule per day
    5 - 10 kg 2 capsules per day

     

    Recommended dosage of Capsules 225mg (dog)  
    Weight Quantity
    10 - 15kg 1 capsule per day
    15 - 30kg 2 capsules per day

     

    Recommended dosage of 450mg (dog)  
    Weight Quantity
    15 - 30kg 1 capsule per day
    30 - 60kg 2 capsules per day

     

    What is the dosage of Zylkene for dogs?

    The dosage of Zylkene depends on your dog’s body weight. The packaging and the table above indicate which strength and quantity are suitable for your dog. Zylkene should preferably be given once daily according to the recommended dosage.

    How long does Zylkene take to work?

    Many dogs experience the calming effect within a few days. For short-term stress, it is recommended to start approximately 1 to 2 days before the stressful event. For prolonged or recurring stress, it is often better to start 1 to 2 weeks in advance for an optimal effect.

    Using Zylkene for short-term stress

    (For example, visits to the vet, travelling, staying in kennels):

    • Give Zylkene Capsules 1 to 2 days in advance
    • Repeat a few hours before the stressful event or change in environment
    • In some cases it is better to give Zylkene Capsules 5 to 7 days prior to the stressful situation

    Using Zylkene for prolonged stress

    (For example, being home alone, living together with other animals, building work):

    • You can expect to see an effect, depending on the situation, after 1 to 2 weeks
    • Re-evaluate your pet after one month
    • It is recommended that this product is used for 1 to 2 months for optimal results.

    How do you recognize anxiety or stress in your dog or cat?

    Dogs and cats often show stress and anxiety through subtle changes in their behavior. If you notice any of the signs below, it could mean that your pet is feeling uncomfortable. If a medical cause has been ruled out, you can support your pet with Zylkene for more relaxation.

    • Dogs: excessive panting, trembling, drooling, whining, barking, smacking, withdrawing or licking themselves a lot. They may also exhibit destructive behavior, such as chewing furniture or breaking things.
    • Cats: hiding, hissing, growling, sudden aggression, frequent licking, not going to the litter box or licking themselves bald spots.

Other customers also bought

Zylkene Capsules reviews
  • Calming
    By Monika Petersen, Wednesday 4 November 2026
    Zylkene 75 mg - 30 capsules (cats & small dogs)

    This product helps my cats settle into their new and unfamiliar surroundings and calms and relaxes them.

  • Good product and very happy dog?
    By Kitty, Thursday 15 October 2026
    Zylkene 225 mg - 30 capsules (dogs)

    Our rescue was very anxious. Although we did see some progress, an escape from our home was the reason to consult a therapist. Zylkene was recommended by our dog therapist. It really helped a lot and now we have a very happy dog. She still gets startled by unexpected loud noises and isn’t fond of screaming children. But more often we see a wagging lady who loves rolling around in the grass.

  • Confidence
    By Monika Petersen, Tuesday 6 October 2026
    Zylkene 75 mg - 30 capsules (cats & small dogs)

    I have two traumatised cats from animal rescue, and I feel that this product helps them become more confident and trusting.

  • good
    By Enzo, Thursday 24 September 2026
    Zylkene 225 mg - 100 capsules (dogs)

    good

  • Calmer
    By Kitty, Sunday 6 September 2026
    Zylkene 225 mg - 30 capsules (dogs)

    Our dog is calmer and more confident. However, passing scooters or screaming children remain a challenge that even Zylkene can't help with.