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ThunderEase Powered by ADAPTIL Calming Pheromone Collar for Dogs, Large, up to 24-in neck

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At a Glance

  • Calming
  • All Lifestages

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About This Item

Details

  • ThunderEase pheromones are powered by ADAPTIL—this vet-recommended brand can help dogs adapt to challenges like separation, thunderstorms, and visitors and curb destructive, stress-related behaviors.
  • Durable and long-lasting design continuously releases calming pheromones for up to 30 days.
  • Helps soothe travel anxiety experienced during airline travel, car rides and moving.
  • Relaxes pets during stressful environments and events such as visiting the vet, anxiety while boarding or kenneling and remodeling.
  • Eases symptoms of stress and anxiety such as problem barking, destructive behavior, inappropriate chewing and peeing.

Ingredient Information

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Questions & Answers

28 Customer Questions

My dog only gets anxious when in a car. She doesn’t need it all of the time, but once you put it on you have to leave it on? It won’t last any longer if you take it off? It only lasts up to 4 weeks, so it gets pretty expensive!

Answer by Chewy • Sep 07, 2018
The calming collar is required to stay on for the full 4 week period. If removed consistently, the effect would wear-off.

Is this collar safe for a mixed dog/cat household?

Answer by Chewy • May 29, 2021
This collar is safe to use while around other pets.

What is this made out of? I have two large chewers and they tend to chew plastic on each other's collars.

Answer by Chewy • Dec 07, 2018
This collar is made out of silicone.

Is this a one-time use product or is it refillable?

Answer by Chewy • Nov 01, 2018
Each collar can be used up to 4 weeks.
Reviews
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3.5
Rated 3.5 out of 5 stars
809 Ratings
Terms & Conditions

394 Customer Reviews

Rated 5 out of 5 stars
By Sabine on Jun 18, 2025

Worked wonders for us and friends, but isn’t for everyone

This made such a HUGE difference for our dog with sever separation anxiety. He used to hurt himself, he was so panicked. Our vet recommended we try this. I was pretty

This made such a HUGE difference for our dog with sever separation anxiety. He used to hurt himself, he was so panicked. Our vet recommended we try this. I was pretty skeptical that it would do anything, sounded a bit woo woo, but we were out of ideas short of drugging him every time we leave. We’ve been getting them for years now. These days we only need to get one if we anticipate stressful times like travel etc. I understand that it doesn’t work for everyone, but it is absolutely worth a try, especially at the price for 4weeks. Understand it is an aid, not a replacement for training. I’ve recommended it to several friends. Some it worked just as well as for us, for others it did not. I also found it’s worth pointing out that the collar needs to be fairly tight in order for it to warm up from the body heat, which helps release the pheromones. And it’s gradual, not the instance you put it on. We always have a pack on hand just in case.

Rated 1 out of 5 stars
By T. on Jul 7, 2025

Fireworks

I wished this worked because Ollie was a mess. We tried it a few days ahead when just a few people were shooting off the “boomers” (what I tell Ollie they are),

I wished this worked because Ollie was a mess. We tried it a few days ahead when just a few people were shooting off the “boomers” (what I tell Ollie they are), I didn’t see any change in him. On the 4th early I had made an emergency call to the vet for medication. If your dog is frightened by loud noise, I would recommend passing on this collar, get medication from your vet. It was my vet who recommended trying this before medicating him.

Rated 5 out of 5 stars
By Suzanne on Jul 19, 2025

WOW

Well, it's currently thundering a bit. Sasha starts trembling so hard it shakes my 1000 lb couch. Hours before weather starts. She also soaks my floors dripping

Well, it's currently thundering a bit. Sasha starts trembling so hard it shakes my 1000 lb couch. Hours before weather starts. She also soaks my floors dripping saliva. It's REALLY FUN TIMES. I couldn't stand it anymore, afterc7 or 8 years gradually getting worse and worse. We ordered this product, and, after eating it only a few hours, with it currently getting ready to rain, this is her in the pic. Calm as she can be. I even got her slobber towel ready. No panting. No trembling. Nothing. This has saved her life, and my sanity. BUY IT

Rated 5 out of 5 stars
By Pat on Mar 3, 2026

Peace without guilt

Have been using the chews Vetriescience Calm & Confident (per my Vet) for a few years. They really make a difference with grooming, vet, visits, watching me pack,

Have been using the chews Vetriescience Calm & Confident (per my Vet) for a few years. They really make a difference with grooming, vet, visits, watching me pack, etc. Toby was quite ill a few years ago, then went through an "escalated aggressive" period. Vet suggested the collar (which I had used before & stopped bc of travel & lack of availability). Went back to collar and the panicked agression went back under control. Now I buy ahead so I always have them available for monthly changging. Still use th chewies in addition as needed

Rated 5 out of 5 stars
By Laura on Dec 24, 2024

Used to be called "Adaptil" - fantastically helpful for upset or anxious dogs.

This used to be called Adaptil, and is equivalent to a pheromone that the mother dog makes when nursing her pups, and their response is a big burst of bonding oxytocin,

This used to be called Adaptil, and is equivalent to a pheromone that the mother dog makes when nursing her pups, and their response is a big burst of bonding oxytocin, making the dog feel safe and secure. It's super helpful for stressful circumstances, such as: when you are watching a friend's dog and they are anxious to be away, they'll settle down and sleep after putting the collar on them; for dogs who are nervous about meeting other dogs, this can help them be more relaxed and feel more receptive to friendly dogs; for when a dog who has lost a sibling, this can help a dog feel peaceful again; when you bring a new dog or puppy into your home, to help them feel bonded with you or the people and pets around you. I have a dog who is much more relaxed and happy, who gets a new collar every two weeks. I recommend this to friends and clients frequently. A really helpful product for dogs!

Rated 4 out of 5 stars
By Jane on Jan 22, 2026

Separation anxiety

Have been wrestling with separation anxiety whenever we have to be gone. (Cody lost his 2 companions last year due to age). I bought the Thunderease pheromone

Have been wrestling with separation anxiety whenever we have to be gone. (Cody lost his 2 companions last year due to age). I bought the Thunderease pheromone jars and put them around the main room...I noticed a slight change. Giving him 300 mg of Trazadone helped a bit more. The combo of the jars, the Trazadone and the collar did the trick and he hasn't caused any additional damage to the entry door.

Rated 4 out of 5 stars
By Stephanie on Nov 4, 2025

Helping aging dog

My Yorkie is 10 years old and her eyes are graying so she's seeing more enemies - I mean shadows - lately. We'll be on our third collar soon and it's helping her

My Yorkie is 10 years old and her eyes are graying so she's seeing more enemies - I mean shadows - lately. We'll be on our third collar soon and it's helping her feel more at ease. She's never been a big barker, but the last couple of months have been a little nutty at nighttime.

Rated 5 out of 5 stars
By Roberta on Apr 7, 2025

They work!

We have had horrendous tornados, t-storms & rain. My 4 dogs needing help got it with Thunderease along with other adjuncts. They did so much better under multi day

We have had horrendous tornados, t-storms & rain. My 4 dogs needing help got it with Thunderease along with other adjuncts. They did so much better under multi day stresses. Highly recommend.

Rated 5 out of 5 stars
By Kristi on Mar 25, 2025

Will buy again & again

Our dog Gypsy has major anxiety & is terrified of so many sounds. We can always tell when her calming collar needs changed because her anxiety gets worse. Soon after

Our dog Gypsy has major anxiety & is terrified of so many sounds. We can always tell when her calming collar needs changed because her anxiety gets worse. Soon after we put a new collar on her, she seems less stressed. We also use the calming diffuser.

Rated 4 out of 5 stars
By Casandra on Dec 25, 2025

It worked.

We recently lost one dog to a tragic coyote accident. She was 11. Our other dog had been with her for that whole time and depression set in. We actually thought

We recently lost one dog to a tragic coyote accident. She was 11. Our other dog had been with her for that whole time and depression set in. We actually thought we’d lose him too. Our vet recommended this collar and it has been a lifesaver. It may not work for every pet but it definitely did for ours.