K9 Best-Flex®

First Look Reviewer - Trial Participant - 02/10/2026 17:18

Paddy has been feeling very good and is much more energetic on his runs! He is much more boundy and he now likes to roll in the grass! We noticed an improvement in Paddy from previously being on the K9-ActiVet and we will definitely be recommending the K9 Best-Flex to our friends (and Paddy's friends)!

First Look Reviewer - Trial Participant - 02/10/2026 16:05

Less stiff in her hind legs - Great to try a product that has made a difference.

First Look Reviewer - Trial Participant - 02/10/2026 13:24

Super super palatable - I’m surprised I have a print left on the bowl! Bert has compromised mobility following surgical complications as a puppy. He tends to scuff his back feet out walking on the lead, and now at 5 sometimes gets off the sofa a bit stiff. After a week and a half myself and my rather skeptical husband noticed a big difference in his movement. Less scuffing out on a walk and no stiffness - he’s moving great and looking comfortable. I was previously on another brands supplement, but the change in him has been remarkable - cannot wait to have him on this longer term.

First Look Reviewer - Trial Participant - 02/10/2026 11:56

My dog is recovering from tplo surgery and was still quite sore when I started the trial. She is now looking much stronger and feeling better. She found it very palatable and even licks the bowl clean if there is any left in when she has finished her biscuits.

First Look Reviewer - Trial Participant - 02/10/2026 11:51

So far so good… palatability is a winner! Never been as keen for food and coat quality has improved.

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Nutrition Information

Supporting your dogs' joint health as they grow, particularly in working or active dogs, is essential to maintaining longevity in your dog's joints. Ageing and repetitive strain can put additional stress on your dog's joints throughout their lifetime. Adding a high-quality joint support supplement can help provide nutritional support for normal joint health and function. This high-specification formulation provides targeted nutritional support for active and working dogs, with some of the highest levels for each proven ingredient.

This high-specification formulation includes:

Glucosamine: A naturally occurring compound that supports healthy cartilage, supporting normal joint mobility and flexibility.

Chondroitin: Maintains healthy cartilage by supporting its strength and elasticity, helping maintain the normal structure and resilience of cartilage.

Hyaluronic Acid (HA): A natural component of synovial fluid that plays a role in normal joint function and health.

MSM: A natural source of sulphur, which helps support healthy connective tissue, collagen production and joint function.

Boswellia: Contains boswellic acids, which are well known for their role in joint support and maintaining a normal anti-inflammatory balance. Boswellia has also been shown to help maintain the structural composition of connective tissues.

Green Lipped Mussel: Naturally rich in omega-3 fatty acids, glucosamine and chondroitin, helping to support healthy joints, cartilage and mobility.

Rice bran: Rice bran provides a range of beneficial fatty acids and bioactive antioxidants.

Linseed: A rich source of omega-3 fatty acids, which help support joint health and contribute to healthy skin and a shiny coat.

If your dog has a shellfish allergy, DO NOT feed this product. If those handling this product have a shellfish allergy, please handle this product with caution and take appropriate precautions during handling.

Consult your veterinarian before feeding to dogs during pregnancy or lactation, or if they are taking medications.

Composition

Rice bran, MSM, Micronised linseed meal, Green-lipped mussel, Glucosamine, Chondroitin, Boswellia serrata powder, Sodium hyaluronate.

Analytical

Moisture	22.5%
Crude protein	20.5%
Crude oils & fats	10.4%
Crude fibre	5.6%
Crude ash	5.9%

*Based on publicised maintenance rates for active ingredients for a medium (12-25 kg) dog. Correct at the time of release.

Feeding Guide

Body weight	Size	Amount per day
Up to 11kg	Small	1 Scoops
12kg - 25kg	Medium	2 Scoops
26kg - 35kg	Large	3 Scoops
Over 35kg	Very Large	4 Scoops

One level 5ml scoop weighs approximately 2.5g.

Introduce gradually, splitting between feeds where applicable.

Feed according to body weight.

Consult your veterinarian before feeding to dogs during pregnancy or lactation, or if they are taking medications.

Can this be fed on wet and/or dry food?

Yes. All K9 supplements can be mixed into either wet or dry food. They can also be split between meals if preferred.

Should I feed for my dog's actual weight or ideal weight?

Feed according to your dog's current body weight unless advised otherwise by your veterinary surgeon.

Can I feed this to a dog with shellfish allergies?

No. K9 Best-Flex® contains Green Lipped Mussel and should not be fed to dogs with shellfish allergies.

How long before I see results?

Many owners notice a difference within 4-6 weeks, although this can vary depending on your dog's age, activity level and individual requirements.

What's the difference between K9 Best-Flex® and K9 Comfort™?

K9 Best-Flex® focuses on structural joint support using ingredients such as Glucosamine, Chondroitin, MSM and HA. K9 Comfort™ focuses on maintaining normal comfort and mobility using a combination of joint nutrients and botanical ingredients such as Devil's Claw and Yucca.

Can K9 Best-Flex® be fed alongside K9 Comfort™?