Vetoquinol Zylkene Behavior Support Capsules Small Dog & Cat Supplement, 75 mg, slide 1 of 1

Vetoquinol Zylkene Behavior Support Capsules Small Dog & Cat Supplement, 75 mg

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Help keep your furry friend calm during stressful times with Vetoquinol Zylkene Behavior Support Capsules Small Dog & Cat Supplement 75 mg. The non-drowsy formula uses alpha-casozepine, a natural ingredient found in cow’s milk, to help balance the stress reactions of dogs and cats safely and with no tranquilizing or sedating effects. Milk-sourced alpha-casozepine is known to promote relaxation in babies, and it works in a similar way for your pet, giving him a sense of comfort and contentment to help him cope with stress or adapt to new situations. It’s perfect for most pet stressors like loud noises, visits to the vet or groomer, as well as unfamiliar people and places. Plus, it’s free of lactose and preservatives, making it ideal for sensitive tummies.

Key Benefits
  • The only veterinary supplement formulated with alpha-casozepine, a natural ingredient from cow’s milk with calming properties to help relax cats and dogs.
  • Non-drowsy formula provides a sense of calm and contentment without tranquilizing or sedating your pal.
  • Perfect to use before or during stressful situations, including moving, adapting to new people or new places, traveling, vet visits, and for behavior training.
  • Free of lactose and preservatives, so it’s ideal for pets with sensitive tummies; used by veterinarians and animal behaviorists worldwide.
  • Formula comes in 75 mg capsules that can be given by mouth, or opened and mixed with a meal.

This product is intended for intermittent or supplemental feeding only. Consult your veterinarian before giving your pet Zylkene. Follow the recommended administration on the package, unless otherwise instructed by your veterinarian.

See all items by Vetoquinol

  • Item Number
  • Lifestage
    Adult, Senior, Puppy
  • Breed Size
    Extra Small & Toy Breeds, Small Breeds
  • Food Form
  • Product Form
Nutritional Info

Dried Hydrolysed Casein, Maltodextrin, Magnesium Stearate.

Guaranteed Analysis
Crude Protein67.0% min
Crude Fiber0.0% max
Moisture5.0% max
Ash14.0% max
Feeding Instructions
WeightDaily Feeding
Up to 10 lbs1 Capsule
11 - 22 lbs2 Capsules
  • Zylkene capsules can be administered once daily, whole or opened (mix the powder with a meal or with a treat).
  • Short-term use: Use Zylkene for 1 - 2 days before a planned event or change in environment. Some animals may need earlier administration (5 - 7 days).
  • Store at controlled room temperature. Keep out of reach of children and pets. Close securely after use.

Why should I include vitamins & supplements in my pet’s diet?

Most commercial pet foods include baseline vitamins and nutrients, but some may not have the adequate amount to suit your pet’s exact health needs. Like in humans, vitamins and supplements can help support your pet’s long-term health, regulating everything from digestion to muscle growth. Consult your veterinarian to determine the best vitamins and supplements for your furry friend.

How often should I give this supplement to my pet?

It is recommended to give the suggested dosage based off your pet’s weight. Please refer to the Feeding Instructions tab and consult with your veterinarian for more information.

Is this supplement safe to use with the medication my pet is currently taking?

If your pet has a medical condition and is taking other medication, we recommend consulting with your veterinarian to ensure that this supplement is safe to use.

My pet is allergic to certain ingredients, will this product be safe to use?

For a complete list of ingredients, click on the 'Nutritional Info' tab, next to the 'Description' tab, just under the product photos. If you are unsure about the safety of this product for your pet, we recommend consulting with your veterinarian.

Does this product come in other product forms?

For a complete assortment of products by the manufacturer of this supplement, click on the link next to the item name at the top of the page. You can also find an assortment of supplements across all product forms on our page.

The Best Choice for Less Pet Stress

Zylkene is a pet parent's trusted solution for times when your cat or dog is feeling stressed. Furry family members are delicate creatures when faced with frightening, unsettling or unpredictable situations or changes in their environment. This innovative behavior supplement helps kitties and pups relax and increases their ability to cope with environmental upsets. A calmer pet leads to a less anxious pet parent and a more tranquil household.

The Best Choice for Less Pet Stress
Take Away the Furry Worries

Take Away the Furry Worries

Even the most easy-going pets can easily become a bundle of nerves in stressful situations. It's pretty common for both cats and dogs to respond to changes with anxiety, but Zylkene offers a way to balance your pet's mood and help them maintain a normal, relaxed disposition.

Some common causes of pet anxiety:



Loud Noises

Loud Noises

New Baby

New Baby



New Home

New Home

Vet Visit

Vet Visit

Look for the Signs

Animals can't tell us when they feel upset, but they can show us in many different ways. Keep an eye on them and look for the telltale signs that they might be distressed. These include sleep pattern changes, more or less social interaction with people or animals, reduced play, hiding, weight loss or gain, withdrawal, barking and howling incessantly or more than usual, repetitive and excessive licking or over-grooming, house soiling, or trying to run away.

Look for the Signs
Just Mix and Serve for Gentle Relief

Just Mix and Serve for Gentle Relief

Zylkene is easy to administer to your pet whenever you're expecting an event like upcoming holidays, visits or vet trips. It comes in capsule form, and you can give it whole or break it open to mix with meals or treats. You only need to give it once daily, starting a few days before the event to bring calming relief.

A Safe Alternative to Sedatives

This supplement is ideal for pet parents who are looking for an alternative to overpowering medications. Zylkene won't cause sedation or drowsiness or cause your pets to be less alert. The main ingredient is a natural, bovine-sourced milk protein called casein. It's the same protein found in mother's milk that has a soothing effect on pups and kitties.

A Safe Alternative to Sedatives
About Vetoquinol

About Vetoquinol

Vetoquinol is a family-owned company devoted exclusively to finding innovative solutions for animal health issues. They've shown more than 80 years of dedication, researching everything from oral hygiene to urinary and kidney health to create products that are effective and safe for the pets you love and care about. Founded in 1933 with an expertise in pet pain management and veterinary resources, Vetoquinol has gained the continued trust of pet parents and vets worldwide.

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