Cosequin vs Dasuquin: Differences for Dogs and Cats

Cosequin and Dasuquin are both joint supplements from Nutramax Laboratories, and both are built on glucosamine and chondroitin sulfate. The difference is that Dasuquin adds avocado/soybean unsaponifiables (ASU), and it usually costs more per day. Neither is an approved drug, and the evidence for either is modest — so the real decision is whether your pet needs a vet visit first, and whether the extra cost of ASU is worth it to you.

How this guide was put together: we compared the ingredient panels Nutramax publishes, the label directions and published veterinary research. We have not tested these products ourselves, we are not veterinarians, and nothing here is veterinary advice. As an Amazon Associate we earn from qualifying purchases; that does not change what we say about either product.

Cosequin vs Dasuquin at a glance

Variants change often. Read the guaranteed analysis on the exact box, because two products with the same brand name can differ in what they add.

What ASU is, and what the evidence says

ASU is an extract of avocado and soybean oils. In people it is sold as a joint supplement in several countries. In dogs, the main evidence is experimental: in a study where osteoarthritis was induced surgically, dogs given ASU showed fewer structural cartilage changes than untreated dogs (Boileau et al., Arthritis Research & Therapy, 2009). That is a laboratory model, not a trial in pet dogs with arthritis, and it did not test Dasuquin itself.

For glucosamine and chondroitin, which both products share, a systematic review of nutraceuticals for osteoarthritis in animals rated the evidence as low (Vandeweerd et al., Journal of Veterinary Internal Medicine, 2012). One randomised trial found dogs given glucosamine and chondroitin improved over 70 days, but more slowly than dogs on a prescription anti-inflammatory, and without a placebo group (McCarthy et al., The Veterinary Journal, 2007).

The honest summary: there is no published head-to-head trial showing Dasuquin works better than Cosequin in pets. If you choose Dasuquin you are paying for an ingredient with some laboratory support.

Cosequin and Dasuquin for cats

Both brands sell cat versions, mostly as sprinkle capsules you open over wet food — which is the practical advantage, because many cats refuse tablets. The research base in cats is thinner than in dogs. The best-supported nutritional option for feline joint disease is omega-3s: in a controlled study, cats with degenerative joint disease fed a diet high in fish-oil omega-3s were more active than cats on a control diet (Lascelles et al., Journal of Veterinary Internal Medicine, 2010).

Joint pain in cats is easy to miss. Signs are a cat that no longer jumps to favourite spots, hesitates on stairs, grooms less along the back, or misses the litter box because stepping in hurts. Those are reasons for a vet visit, not just a supplement.

Side effects and who should ask a vet first

The side effects most often reported for glucosamine and chondroitin supplements are mild digestive upset: soft stools, vomiting or reduced appetite, usually when starting. Ask your vet before starting either product if your pet:

Never give a human joint or pain product to a pet. Several human pain medications are toxic to dogs and cats.

What helps more than either supplement

Keeping a dog lean has stronger evidence than any supplement: in a lifetime study of Labrador Retrievers, dogs kept leaner developed osteoarthritis later (Kealy et al., JAVMA, 2002). Fish-oil omega-3s have better evidence than glucosamine. And when pain affects daily life, vets now have effective options, including anti-inflammatories and monthly antibody injections — bedinvetmab (Librela) for dogs and frunevetmab (Solensia) for cats, both approved by the FDA.

How to choose

For a wider look at fish oil, green-lipped mussel and CBD, see our guide to joint supplements for dogs.

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