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K9 Hero

Calm Hero 2.0

Calm Hero 2.0

⭐⭐⭐⭐⭐ " I reviewed their previous product as good but not great...but this is working a miracle for my Lurcher. " - Sam, Calm Hero V2 Customer

Help your dog live a calmer, more peaceful life in 30 days or less - with the improved & tested Calm Hero 2.0 

A 100% natural, vet-approved supplement powder. Help your nervous or anxious little friend be more calm & confidentMade with love, right here in the UK.

Help reduce your dog's -  

Anxiety & Loneliness 
✅ Reactivity & Hyperactivity
✅ Excessive Barking
✅ Stress & Fear

✅ Aggressive Behaviour

Regular price £36.99
Regular price £36.99 Sale price £36.99
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  • 60 Day Money Back Hero Guarantee
  • Free Shipping over £40 & subscriptions
  • Pay in 3 Payments with Klarna

🙏 Your purchase saves more dogs We'll donate 50p to support local dog shelters such as Many Tears Animal Rescue

Nutritional Information

Active ingredients:

🌼 L-Tyrosine NEW! (80mg per scoop)

🍋 Lemon Balm Extract 4:1

🌺 Organic Passiflora Incarnata (Passion Flower) (50mg per scoop)

🌿 L-Tryptophan (70mg per scoop)

🍇 Brewers Yeast

🌾 Taurin (30mg per scoop)

Scroll down to find more about these magical calming ingredients ✨👇

Feeding Guidelines

Dog Weight Amount / Day
Up to 10kg 1 Scoop
10 to 25kg 2 Scoops
25kg to 40kg 3 Scoops
Over 40kg 4 Scoops


*Just sprinkle on or mix in with your dog's food, no more fussy tablets!
Suitable for any breed over 3 months old, not suitable for nursing or pregnant dogs.

How long does Calm Hero last?

Dog Weight 1 Pouch Lasts Cost / Day
Up to 10kg 4 Months Only 23p / Day
10 to 25kg 2 Months Only 47p / Day
25kg to 40kg 40 Days Only 70p / Day
Over 40kg 30 Days Only 93p / Day


Money Back Guarantee

The Hero Guarantee

It's not about us, it's about you & your doggo.

If you've used Calm Hero daily for 60 days & still aren't happy with the results -

It's incredibly simple -

1. Email us at

2. Tell us your issue - we're all ears

3. Get your money back

It's really that simple, no fussy forms!

View full details
  • Non-Sedative

  • Cruelty-Free

  • Made in the UK

  • Wheat & Grain Free

  • GMP Certified

  • 100% Plant Based

Have a Calmer, Happier Life With Your Dog In 30 Days

How does each ingredient in Calm Hero 2.0 help your dog?

🌼 L-Tyrosine NEW

A 100% natural amino acid, helping to reduce stress & increase focus in most situations

🍋 Lemon Balm Extract 4:1

Helps to naturally calm your dog’s stress levels from loud noises & car trips.

🌺 Organic Passiflora Incarnata (Passion Flower)

Passiflora is proven to aid in easing anxiety & relax hyperactive behaviours such as jumping, lunging, biting and barking.

🌿 L-Tryptophan

A natural amino acid which is involved in hormone production. Help reduce aggression & reactivity towards other people & dogs.

🍇 Brewers Yeast

Rich in B Vitamins & antioxidants, this wonder ingredient helps to ease separation anxiety & stress. Even more, it’s shown to promote healthy skin, hair, eyes, and liver function.

🌾 Taurin

Taurine has been shown to have a soothing effect on your dog’s nervous system. Reducing fear, stress & nerves in everyday situations. Also helps to reduce destructive chewing.

How does Calm Hero compare?

Before Calm Hero, we tried many brands out there today...& nothing worked.

Unfortunately, we quickly realised other brands cut corners by sourcing their ingredients indirectly from low-cost, low-quality suppliers.

With Calm Hero Version 2.0, we used real customer feedback from our first product. As a result - we were able to make an improved recipe, shown to be effective for most dogs.

Calm Hero is made with the UK's industry leading supplier & pet nutritionists. Bringing you a product which is safe & made with care for your doggo ❤

Loved by Pets, Endorsed by Vets

"I'm really impressed by Calm Hero's ingredients. This powder is safe & can help alleviate pets from anxiety or stress. Helping them to relax & be happier. 

- Wendy Cole, Registered Veterinarian Nurse for 16+ years


How should I give this to my doggo?

Simply sprinkle the recommended amount of powder on your rescue’s daily meals, it’s that simple! Or if it’s easier, mix it in.

Is this safe?

Because we only use natural ingredients, this product is generally considered safe.

But, we always recommend talking to your veterinarian if you have any concerns about using Calm Hero.

How often should I give my dog these supplements?

This supplement can be administered on an as-needed basis depending on your dog’s behaviour and symptoms.

But you can absolutely give your dog Calm Hero on a long-term, daily basis at the recommended dosage to generally reduce stress and anxiety!

When should I give these to my dog?

You can give these to your dog when you expect any anxiety or stress-inducing event, though they work best when given to your dog on a routine basis.

Some events that Calm Hero can support your dog through include thunderstorms, fireworks, dog park visits, car rides, long separation, vet visits, or grooming.

Can I give this to my dog when they are on medication?

We don't recommend that Calm Hero are fed to dogs who are on
behaviour-modifying drugs and we would recommend consulting your vet before adding these products to your dog's diet.

What flavour is it?

Calm Hero is flavourless. Perfect for fussy eaters, all they taste is their food!

How long does shipping take?

Domestic Shipping

Processing & packing usually takes 1-2 days from order being placed.

All orders are shipped next business day using Royal Mail’s Tracked 24 & 48 Hour service! You’ll receive a tracking number once we’ve dispatched your order.

Shipping Prices

48 Hour Tracked Shipping - £1.99

24 Hour Tracked Shipping - £2.99

Free Next Day Shipping when you spend over £40!

Subscriptions receive 24 Hour Tracked Shipping for free!

International Shipping

We now ship to Australia! All international orders come with tracking information.

Shipping Prices

Express International Shipping - $9.99 (6-7 Working Days)

Free shipping for orders over $82 & subscriptions!

How can I return my product? Can I get a refund?

The Hero Guaruntee

It's not about us, it's about you & your dog.

If you've used Calm Hero daily for 60 days & aren't completely happy with the results -

It's incredibly simple -

1. Email us at

2. Tell us your issue - we're all ears

3. Get your money back

It's really that simple, no fussy forms!

Is your packaging recyclable?

Yes! If there’s one thing we care more about more than our dogs, it’s the planet. That’s why our pouches are made from fully recyclable material.

How does the subscription work?

Every dog is unique, so there’s no ‘one size fits all’ when it comes to delivery cadence. We strive to offer a variety of subscription plans so your four-legged friend always has the support they deserve. Depending on your dog’s weight and dosage, subscription frequency may vary from just 30 days to as long as 120 days between shipments. You can see more information about our subscriptions here.

How can I update, change or cancel my subscription?

You can update any details including product selection and subscription frequency through your Account page. You can pause or cancel your subscription at any time. While we hope you remain a K9 Hero supporter forever, we understand that things change. If you need any help, please see more information here or reach out to us at