Vetoquinol Zylkene Behavior Support Capsules for Dogs & Cats, 225mg, 30ct - Calming Natural Milk Protein Supplement - Help Pets Cope with Change & Noise-Related Stress - Non-Drowsy - Lactose-Free
Vetoquinol Zylkene Behavior Support Capsules for Dogs & Cats, 225mg, 30ct - Calming Natural Milk Protein Supplement - Help Pets Cope with Change & Noise-Related Stress - Non-Drowsy - Lactose-Free
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Vetoquinol Zylkene Behavior Support Capsules for Dogs & Cats, 225mg, 30ct - Calming Natural Milk Protein Supplement - Help Pets Cope with Change & Noise-Related Stress - Non-Drowsy - Lactose-Free

Pet Size:Medium-Out of stock
Count Per Pack:30-Out of stock

Key item features

  • Non-drowsy nutritional supplement to help manage pet behavior problems; helps promote sense of calm
  • Helps support pets stressed over fireworks, thunderstorms, grooming, vet visits & changes at home
  • Suitable for dogs, ideal for pets with sensitive stomachs; safe for short & long-term use
  • Zylkene contains a calming natural milk protein that is lactose-free & simple to administer daily
  • Trusted US pet food supplement brand with NASC Quality Seal, devoted to animal health since 1933
Current price is $45.95
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Customer ratings & reviews

4.3 out of 5 stars
stars465 ratings419 reviews
How item rating is calculated
4.6
4.6
4.5
4.0
3.5
0.8

Reviews summary

Pros

  • : Reduces anxiety and stress in pets.
  • : Reduces stress and anxiety during travel.
  • : Helps minimize excessive barking in various situations.
  • : Reduces anxiety and hyperactivity in pets.
  • : Helps reduce anxiety in pets without sedation.

Cons

  • : Struggles in loud environments.
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Showing 1-3 of 419 reviews

Dec 15, 2025
Mia
Top Reviewer
Item details
Pet size: Extra Small
Count per pack: 14
5 out of 5 stars review

Verified Purchase

Works great

My dog has PTSD and became addicted to cheese, after researching why %26 how cheese gives the brain dopamine I realized why he was addicted. Unfortunely he is lactose intolerant so I had to cut him off of cheese and put him on a special home cooked diet. I tried every otc suppliment to help him with his anxiety and could not find anything that worked. I saw these and realized they contain the active ingredient in the cheese that was giving my dog the dopamine he needed to feel calm and motivated. I'm am so grateful for the scientist who came to the same conclusion and formulated these capsules because they are a life saver for my dog and for my stress managment. I recommend this to any pet owner who has pets with ADHD sympthoms or anxiety.

Helpful?5CLLJJU39X3O752344534
Jan 11, 2026
Pamelyn
Item details
Pet size: Extra Small
Count per pack: 30
5 out of 5 stars review

Verified Purchase

Great product for cat's anxiety

I have a 7 pound cat that was experiencing anxiety after I went back to work. She's a beautiful long hair cat who began over-grooming so badly that there were hair chuncks all over the house and she suddenly went from looking like a floofy puff ball to a thin shadow of what she was. The vet recommended those pheromones that you plug into the outlet. They had no effect. Then I found this suppliment. She's been taking it for 2 months now and she's becoming much closer to her previous floof ball self. I talk one capsule, open it up and mix into a small amout of wet food. She loves it as a treat and I'm so happy that her anxiety is so much better. I definitely recommend this product.

Helpful?5CLLJJU39X3O752344534
Jun 8, 2026
Karen
Top Reviewer
Item details
Pet size: Extra Small
Count per pack: 14
5 out of 5 stars review

Verified Purchase

My poor Tomcat who was a rescue animal that I took in and cared for had some trouble adjusting to our new residence and disappeared for several days in March . He managed to pull off his tracking collar , so I left his favorite food by our door in hopes he would get hungry and return home. 7 days later he finally showed up but had awful wounds on his back, shoulder, and chest that required a vet's expertise. Buddy needed his head and torso shaved and treated with wound dressing and antibiotics for a month which meant he was housebound for the first time in his young life. I had no idea how he would react, and unfortunately it was very stressful on everyone involved because he just couldn't cope with being cooped up at night after the antibiotics began to work but also agitated him and he began to tear up my bilnds and scratch at the door like a wild beast. The vet suggested Xylkene in his food to help calm him down and I noticed the difference almost immediately. We work out a system to safely keep him in our garage at night so we could go back to sleeping at night until he was free of his infection and strong enough to get back outside with supervision. I now keep a supply on hand in case he gets hurt or sick and needs another trip to the vet, because he definitely doesn't like riding in the car. Thanks for this great and natural remedy for my poor kitty and for our solution for some sleepless nights. Buddy is back to his charming self and good as new 🐱

Helpful?5CLLJJU39X3O752344534