Cosequin DS Plus MSM Review: Formula, Pros & Cons

Key facts
Type	Joint supplement (chewable tablet)
Model / size	132 chewable tablets
Key spec	Glucosamine 600 mg, chondroitin 300 mg, MSM 250 mg per tablet
Ongoing costs	Daily supplement, repeat purchase
Trust & certification	Health Canada NN.T7KF (Canadian label); no NASC seal
Best for	Everyday joint support for active dogs

Overview

Cosequin is the dog joint supplement name most owners hear first, and Nutramax says it is the number one veterinarian-recommended retail joint health brand, based on its own survey. This 132-count chewable tablet is sold as Cosequin DS Plus MSM in Canada and as Cosequin Maximum Strength Plus MSM in the US. The per-tablet amounts are the same on both labels.

The formula sticks to the classic joint trio: glucosamine, chondroitin and MSM, with manganese added. Nutramax names the specific ingredient sources it uses, and the Canadian label carries a Health Canada notification number. It is meant to support joint health over time, not to relieve pain, so talk to your vet about whether it fits your dog.

Key features

Per tablet: glucosamine HCl 600 mg, sodium chondroitin sulfate 300 mg, MSM 250 mg, manganese 3 mg
Named ingredient sources (FCHG49 glucosamine, TRH122 chondroitin)
Chewable tablet format
Made in the USA with globally sourced ingredients
Health Canada NN.T7KF printed on the Canadian label
Also sold in 60- and 250-count sizes

Who it suits (and who should skip it)

It suits owners of active, ageing or large dogs who want a well-known joint supplement that their vet will recognise straight away. It is also a sensible first step before a premium formula, since the ingredient amounts are easy to compare against other brands.

Skip it if you only buy supplements with the NASC Quality Seal; Nutramax is not a NASC member and runs its own quality programme instead. Owners of dogs with limping, stiffness that appears suddenly or pain should book a vet visit first rather than starting a supplement.

It also helps to set expectations. Joint supplements like this are meant for long-term support rather than quick, visible changes, and Nutramax positions Cosequin as part of a daily routine. Weight control, regular moderate exercise and routine vet checkups do a lot of the work for ageing joints, so think of a supplement as one part of that plan rather than the whole of it.

Costs to know about

This is a daily, ongoing supplement, so a 132-count box is a recurring purchase. How long it lasts depends on your dog’s size and your vet’s advice; follow the label. Be careful when sizing up on Amazon.com: the 250-count listing there is a different formula with added hyaluronic acid, not simply a bigger box of the same tablets.

Counterfeits are the main risk. Nutramax has reported fake Cosequin from unauthorised third-party sellers, so buy from a listing shipped and sold by Amazon and check the seal and lot number on arrival.

How it compares

Dasuquin with MSM for Large Dogs is Nutramax’s step-up formula, adding ASU, boswellia and green tea extract with higher per-tablet amounts, at a higher cost. If your vet is also suggesting skin and coat support, Nordic Naturals Omega-3 Pet is our fish oil pick.

Pros and cons

What we like

Same per-tablet formula on US and Canadian labels
Health Canada NN.T7KF on the Canadian label
Named glucosamine and chondroitin sources
Vets recognise it instantly

Watch out for

No NASC Quality Seal
Frequent counterfeit target from third-party sellers
US 250-count listing is a different formula

Our rating: 4.4/5

Formula & science	4.4
Ease of use	4.5
Safety & trust	4.2
Value	4.5
US & Canada availability	4.5

Our rating is an editorial score based on the brand's published specs, independent reviews, safety and trust signals, value and availability in the US and Canada. It is not Amazon's customer rating, and brands do not pay for placement.

Frequently asked questions

Is Cosequin DS Plus MSM the same as Cosequin Maximum Strength Plus MSM?

Yes, for this 132-count chewable tablet. Canada uses the DS Plus MSM name and the US uses Maximum Strength Plus MSM, but the per-tablet amounts of glucosamine, chondroitin, MSM and manganese match. The Canadian package also carries Health Canada NN.T7KF. Both stores use the same ASIN for this listing.

How do I know my Cosequin is genuine?

Buy from a listing that is shipped and sold by Amazon rather than an unknown third-party seller, and check that the name and count match what you meant to order. Nutramax has warned about counterfeits from unauthorised sellers. On arrival, make sure the seal is intact and the lot number and expiry date are printed clearly.

Does Cosequin have the NASC seal?

No. Nutramax is not on the NASC member list and runs its own quality programme instead. That does not mean the product is poor quality, but if the NASC seal is a requirement for you, Purina's FortiFlora and Nordic Naturals Omega-3 Pet come from NASC-audited companies.

How much Cosequin should I give my dog?

Follow the label and your vet's advice. The right amount depends on your dog's weight, and your vet may suggest a different routine based on age or other medications. Bring the box to your next appointment so your vet can see the exact formula you are using.

This page is general information, not veterinary advice. Check with your vet before changing your pet's food or adding a supplement.

Nutramax Cosequin DS Plus MSM Chewable Tablets