Calm-K9 | Calming Support for Happy, Relaxed Dogs

Calm-K9 | Calming Support for Happy, Relaxed Dogs

Name: Calm-K9 | Calming Support for Happy, Relaxed Dogs
Brand: A-OK9
SKU: CALMK9-1POUCH
Price: 37.49 GBP
Availability: InStock
Rating: 4.68 (1713 reviews)

£37.49

Created by vets and trainers.

Calms anxious or stressed dogs.

Natural, non-sedative supplement.

Supports training and behavior.

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Calm-K9 Max Strength is a natural calming supplement that supports your dog through life's stressful events. Formulated by our team of vets, champion trainers and nutritionists, the 100% natural, non-sedative ingredients target both your dog's brain and gut health, to improve their quality of life, and helps to reduce reactive and anxious behaviours.

Simply add the recommended amount of supplement powder to your dog's feed once a day, with the best results coming when taken everyday. The powder format allows high levels of active ingredients, with no unnecessary fillers, for maximum impact.

Whether your dog is generally anxious, or they need more support around fireworks night, routine change, travel, kennel stays, separation anxiety or visitors, Calm-K9 Max Strength helps to calm your canine.

Active ingredients per 2g:

L-Tryptophan 250mg

Passiflora Incarnata Powder 1000mg

L-Glutamine 100mg

Lemon Balm Extract 25mg

Enterococcus faecium 3 × 10¹¹ CFU/kg

Mannan oligosaccharides 50mg

Beta Glucans 50mg

Composition:

Maltodextrin, Yeast Extract, Passiflora Incarnata, Vegetarian Flavouring.

Additives (per 2g):

Amino Acids and their salts/analogues:

L-Tryptophan 250mg

L-Glutamine 100mg

Natural products – botanically defined:

Lemon Balm Extract 25mg

Gut flora stabilisers:

Enterococcus faecium DSM 10663/NCIMB 10415 3 × 10¹¹ CFU/kg

Analytical Constituents:

Crude Protein 18.6%

Total Oil 1.5%

Ash 0.6%

Crude Fibre 0.2%

Simply mix the powder supplement into your dog's daily food. Feed according to your dogs weight and gradually increase over 5-7 days.

Dog Size	Serving Size	No. days per pouch
Small Dogs (0–10kg)	1g (¼ teaspoon)	100 days
Medium Dogs (11–20kg)	2g (½ teaspoon)	50 days
Large Dogs (21–40kg)	3g (1 teaspoon)	30 days
Xtra Large Dogs (41kg +)	5g (1 ½ teaspoons)	20 days

How quickly will Calm-K9 Max Strength work?

+

Calm-K9 Max Strength is usually rapid acting and some changes can be seen straight away. However, just like humans, all dogs are different and others might take longer to see imporvements so we recommend allowing up to 50 days.

Is this dog supplement suitable for all breeds, ages and sizes of dog?

+

Yes! Calm-K9 can be fed to any dog over 8 weeks old. The only thing that affects the daily dosage of Calm-K9 Max Strength is your dog’s size. See our feeding info chart for more details.

Please Note:
Calm-K9 Max Strength should not be used in conjunction with SSRIs (Selective Serotonin Reuptake Inhibitors) unless explicitly approved by your veterinarian. Always consult with your vet before introducing new supplements to your dog's regimen, especially if your dog is on prescription medications.

What is in Calm-K9 Max Strength?

+

Calm-K9 Max Strength is designed to naturally support calm behaviour and emotional balance in dogs, by nurturing the powerful connection between the gut and the brain.

Each spoonful contains:

L-Tryptophan (250mg) – an essential amino acid that supports serotonin production, helping promote calm behaviour

Passiflora (Passionflower) Powder (100mg) – a traditional botanical used to support relaxation and emotional balance

L-Glutamine (100mg) – supports the gut lining, which plays a key role in mood regulation through the gut-brain axis

Lemon Balm Extract (25mg) – known for its calming and mood-balancing effects

Enterococcus Faecium (3x10¹¹ CFU/kg) – a beneficial probiotic to support gut health and reduce stress responses

Beta Glucans & MOS (50mg each) – support immune health and gut stability, especially under stress

All of this is delivered in a gentle, tasty powder with natural flavouring, making daily calm support stress-free and straightforward.

Supplement Composition per 2g Scoop
L-Tryptophan	250mg
Passiflora Incarnata Powder	100mg
L-Glutamic Acid	100mg
Lemon Balm Extract	25mg
Enterococcus Faecium	3 x 10¹¹ CFU/kg
Mannan oligosaccharides	50mg
Beta Glucans	50mg

My dog is on a special diet. Can they still have this?

+

Yes! This works with any diet. The formula is gluten free and is designed to assist your dog’s gut – not upset it!

How do I give this supplement to my dog?

+

We’ve produced Calm-K9 Max Strength as a powder supplement so it can easily be added to your dog’s daily food. Simply measure and mix! We love to spread ours on K9-Calm Mats for an extra calming boost.

Don’t forget the Dog Training!

+

To make sure your training is on the right track we send you a free training eBook with every pouch. We want you to have the BEST and QUICKEST chance of success and so we highly recommend adding training to your weekly routine.

Our FREE eBook will give you some super simple, quick and easy ideas. By considering these pieces of the puzzle along with training, you can move closer to your dog's transformation potential!

Is there any scientific evidence that the ingredients in Calm-K9 Max Strength can aid calmness?

+

Calm-K9 Max Strength contains scientifically backed ingredients proven to promote calmness and reduce anxiety in dogs. Here’s how it works:

Serotonin and Tryptophan

Serotonin is a neurotransmitter responsible for regulating mood, optimism, appetite, aggression, impulse control, and anxiety.
The body produces serotonin using tryptophan, an essential amino acid that must be obtained through diet.
Once absorbed, tryptophan is converted into serotonin, which has anti-anxiety and calming effects through its neurological pathway.

Key Ingredients

Lemon Balm
Passiflora (Passionflower)
Probiotics

References:

DeNapoli JS, Dodman NH, Shuster L, Rand WM, Gross KL. Effect of dietary protein content and tryptophan supplementation on dominance aggression, territorial aggression, and hyperactivity in dogs. J Am Vet Med Assoc. 2000 Aug 1;217(4):504-8.
Kato M, Miyaji K, Ohtani N, Ohta M. Effects of prescription diet on dealing with stressful situations and performance of anxiety-related behaviors in privately owned anxious dogs. J Vet Behav. 2012 Jan;7(1):21-6.
Weeks BS. Formulations of dietary supplements and herbal extracts for relaxation and anxiolytic action: Relarian. Med Sci Monit. 2009 Oct;15(11):RA256-62.
Desbonnet L, Garrett L, Clarke G, Bienenstock J, Dinan TG. The probiotic Bifidobacteria infantis: an assessment of potential antidepressant properties in the rat. J Psychiatr Res. 2008 Dec;43(2):164-74.
Moloney RD, Desbonnet L, Clarke G, Dinan TG, Cryan JF. The microbiome: stress, health and disease. Mamm Genome. 2014 Feb;25(1):49-74.

My dog is going under general anaesthetic. Can I still feed Calm-K9 Max Strength?

+

As Calm-K9 is centrally-acting, to be safe, we recommend stopping Calm-K9 Max Strength & Calm-K9 Senior Boost Max Strength 3 days before the operation and picking up again 3 days after. All other supplements can be given the day before and restarted after 48 hours.

What is the optimum time to feed Calm-K9 Max Strength?

+

It doesn't matter at all what time you give Calm-K9. Some of our Health Heroes like to give it in the morning and some in the evening.

Calm-K9 | Calming Support for Happy, Relaxed Dogs

As Seen In

Better Health. Happier Dogs.

Support your dog’s wellbeing with all-natural superfood support,expertly made dog health & wellbeing products.

Made By
Experts

Our products have been formulated by our team of vets, champion trainers and nutritionists.

Natural Quality
Ingredients

All of our products are 100% natural, non-sedative and supported by research.

Superfood
Innovation

A powerful powder supplement that fits easily into your dog’s mealtime routine.

The ingredients behind Calm-K9

Supports anxiety relief, stress reduction and improved behaviour. Ideal for reactive or anxious pets.

Created by vets and trainers.
Calms anxious or stressed dogs.
Natural, non-sedative supplement.
Supports training and behavior.

L-Tryptophan

250mg

L-Tryptophan supports the body’s natural production of serotonin, helping to promote calmer moods and better sleep.

L-Glutamic Acid

100mg

Beneficial gut-balancing bacteria helps to metabolise food and absorb nutrients, promoting gut wellness while improving mood and mental wellness!

Passiflora Incarnata

100mg

A powerhouse team of superfoods packed with properties to combat anxiety, promote calmness and assist a healthy sleep cycle.

Lemon Balm Extract

25mg

Lemon balm naturally supports calm and relaxation, working alongside Passiflora to help reduce anxiety during stress.

Enterococcus Faecium

3 × 1011 CFU/kg

Probiotics help maintain a healthy balance of beneficial gut bacteria, supporting better digestion and nutrient absorption, while also positively influencing mood by promoting the gut–brain production of calming neurochemicals like serotonin.

Mannan Oligosaccharides

50mg

Mannan Oligosaccharides act as prebiotic fibres that feed and support beneficial gut bacteria, helping to maintain a healthy, balanced digestive system.

Beta Glucans

50mg

They help create optimal conditions for healthy gut flora to thrive and support the immune system by promoting key defence cells such as neutrophils, monocytes and interleukins.

What Makes A-OK9 Products Different?

Smarter Dog Health and Wellbeing Starts Here
Crafted by vets, behaviourists, and nutrition experts, A-OK9 delivers science-backed, all-natural superfood blends designed to support health, behaviour, and longevity—without the fillers or fuss.

All-Natural Superfood Blends

No fillers or artificial nasties

Targeted Health Support

For calm, joints, digestion & more.

TAKE THE QUIZ

Why Calm-K9 is a daily essential for happier, calmer dogs

Easy daily scoop

All-natural ingredients

Vet-approved formulations

No fillers or artificial additives

Made in the UK

GET STARTED

All Your Frequently Asked Questions - Answered!

How quickly will Calm-K9 Max Strength work?

+

Calm-K9 Max Strength is usually rapid acting and some changes can be seen straight away. However, just like humans, all dogs are different and others might take longer to see imporvements so we recommend allowing up to 50 days.

Is this dog supplement suitable for all breeds, ages and sizes of dog?

+

Yes! Calm-K9 can be fed to any dog over 8 weeks old. The only thing that affects the daily dosage of Calm-K9 Max Strength is your dog’s size. See our feeding info chart for more details.

Please Note:
Calm-K9 Max Strength should not be used in conjunction with SSRIs (Selective Serotonin Reuptake Inhibitors) unless explicitly approved by your veterinarian. Always consult with your vet before introducing new supplements to your dog's regimen, especially if your dog is on prescription medications.

What is in Calm-K9 Max Strength?

+

Calm-K9 Max Strength is designed to naturally support calm behaviour and emotional balance in dogs, by nurturing the powerful connection between the gut and the brain.

Each spoonful contains:

L-Tryptophan (250mg) – an essential amino acid that supports serotonin production, helping promote calm behaviour

Passiflora (Passionflower) Powder (100mg) – a traditional botanical used to support relaxation and emotional balance

L-Glutamine (100mg) – supports the gut lining, which plays a key role in mood regulation through the gut-brain axis

Lemon Balm Extract (25mg) – known for its calming and mood-balancing effects

Enterococcus Faecium (3x10¹¹ CFU/kg) – a beneficial probiotic to support gut health and reduce stress responses

Beta Glucans & MOS (50mg each) – support immune health and gut stability, especially under stress

All of this is delivered in a gentle, tasty powder with natural flavouring, making daily calm support stress-free and straightforward.

Supplement Composition per 2g Scoop
L-Tryptophan	250mg
Passiflora Incarnata Powder	100mg
L-Glutamic Acid	100mg
Lemon Balm Extract	25mg
Enterococcus Faecium	3 x 10¹¹ CFU/kg
Mannan oligosaccharides	50mg
Beta Glucans	50mg

My dog is on a special diet. Can they still have this?

+

Yes! This works with any diet. The formula is gluten free and is designed to assist your dog’s gut – not upset it!

How do I give this supplement to my dog?

+

We’ve produced Calm-K9 Max Strength as a powder supplement so it can easily be added to your dog’s daily food. Simply measure and mix! We love to spread ours on K9-Calm Mats for an extra calming boost.

Don’t forget the Dog Training!

+

To make sure your training is on the right track we send you a free training eBook with every pouch. We want you to have the BEST and QUICKEST chance of success and so we highly recommend adding training to your weekly routine.

Our FREE eBook will give you some super simple, quick and easy ideas. By considering these pieces of the puzzle along with training, you can move closer to your dog's transformation potential!

Is there any scientific evidence that the ingredients in Calm-K9 Max Strength can aid calmness?

+

Calm-K9 Max Strength contains scientifically backed ingredients proven to promote calmness and reduce anxiety in dogs. Here’s how it works:

Serotonin and Tryptophan

Serotonin is a neurotransmitter responsible for regulating mood, optimism, appetite, aggression, impulse control, and anxiety.
The body produces serotonin using tryptophan, an essential amino acid that must be obtained through diet.
Once absorbed, tryptophan is converted into serotonin, which has anti-anxiety and calming effects through its neurological pathway.

Key Ingredients

Lemon Balm
Passiflora (Passionflower)
Probiotics

References:

DeNapoli JS, Dodman NH, Shuster L, Rand WM, Gross KL. Effect of dietary protein content and tryptophan supplementation on dominance aggression, territorial aggression, and hyperactivity in dogs. J Am Vet Med Assoc. 2000 Aug 1;217(4):504-8.
Kato M, Miyaji K, Ohtani N, Ohta M. Effects of prescription diet on dealing with stressful situations and performance of anxiety-related behaviors in privately owned anxious dogs. J Vet Behav. 2012 Jan;7(1):21-6.
Weeks BS. Formulations of dietary supplements and herbal extracts for relaxation and anxiolytic action: Relarian. Med Sci Monit. 2009 Oct;15(11):RA256-62.
Desbonnet L, Garrett L, Clarke G, Bienenstock J, Dinan TG. The probiotic Bifidobacteria infantis: an assessment of potential antidepressant properties in the rat. J Psychiatr Res. 2008 Dec;43(2):164-74.
Moloney RD, Desbonnet L, Clarke G, Dinan TG, Cryan JF. The microbiome: stress, health and disease. Mamm Genome. 2014 Feb;25(1):49-74.

My dog is going under general anaesthetic. Can I still feed Calm-K9 Max Strength?

+

As Calm-K9 is centrally-acting, to be safe, we recommend stopping Calm-K9 Max Strength & Calm-K9 Senior Boost Max Strength 3 days before the operation and picking up again 3 days after. All other supplements can be given the day before and restarted after 48 hours.