Why GoodYears Mobility contains these amounts: ingredients and dosage explained

By The GoodYears team · Published 2026-10-20 · How we write and check these guides

Daily amounts at the label dose of GoodYears Mobility (per chew: glucosamine HCl 500 mg, MSM 400 mg, green-lipped mussel 150 mg, chondroitin sulfate 110 mg). Contains shellfish. Check with your vet first if your dog takes any medication.

The label dose is 1 chew a day up to 15 lb, 2 for 15 to 45 lb, 3 for 45 to 75 lb and 4 over 75 lb. If your dog gets more than one, split them between morning and evening. You can check your dog's band on the daily amounts FAQ.

We publish this page because many joint chews do not show mg per chew at all.

We would rather you judge our amounts with the numbers in front of you.

How do these amounts compare with what research used?

To compare across dog sizes, you need milligrams per kilogram of body weight per day. The formula is simple:

mg per kg per day = mg per chew × chews per day ÷ (weight in lb ÷ 2.2046)

Calculated from the GoodYears label at 1 kg = 2.2046 lb, rounded.

Now each ingredient, plainly.

Glucosamine is the dose-led ingredient. A commonly cited maintenance figure is about 15 mg/kg a day, from veterinarian Matt Brunke, quoted in dvm360. That is a single source, and no universal dosing standard exists, as Cornell notes. At the label dose, Mobility gives roughly 44 to 110 mg/kg across the weights above, so it sits at or above that figure for every size of dog.

Chondroitin is modest for large dogs. The same dvm360 article doses chondroitin like glucosamine when it is given alone. Mobility reaches about 15 mg/kg or more for most dogs up to around 30 lb. For a 60 to 100 lb dog it is closer to 10 to 12 mg/kg.

Green-lipped mussel is a complementary amount, well below study doses. A commonly cited figure is 77 mg/kg a day, attributed to Cornell and dvm360. A 2009 trial of 45 dogs used a branded mussel extract at 20 to 49 mg/kg a day for 10 days, then half that (Hielm-Björkman et al.).

PetMD suggests about 500 mg a day for small dogs up to 1,000 mg for large ones. Mobility gives 150 to 600 mg a day, or about 13 to 33 mg/kg across the weights in the table.

Study products were also specific extracts, so any generic comparison is only a rough guide. Our mussel amount does not match the studies, and we do not suggest it does.

MSM has no canine efficacy research. Brunke, quoted in dvm360, says there has been "no published research" on MSM in dogs (dvm360). A 2022 meta-analysis of 72 trials found MSM only inside multi-ingredient products, so its own effect could not be separated (Barbeau-Grégoire et al.).

Cornell lists it only as a common ingredient. The mg/kg figures above are there so you can see what your dog gets, not because there is a canine target to hit.

What does the wider evidence say about these ingredients?

The honest summary is modest. A 2012 systematic review of 22 papers rated the evidence low for every nutraceutical except omega-3 in dogs (Vandeweerd et al.). Mobility contains no omega-3 or fish oil.

For glucosamine and chondroitin, the 2022 meta-analysis found that 88.9% of trials showed no effect on pain (Barbeau-Grégoire et al.). A 2017 review found the evidence limited and conflicting, and hard to read partly because studies used different salt forms and doses (Bhathal et al.). In a 2003 trial of 71 dogs with osteoarthritis, a glucosamine, chondroitin and manganese product did not improve force-plate gait (Moreau et al.).

Green-lipped mussel has somewhat better results. In a 2006 trial of 81 dogs with presumed joint disease, owners reported more improvement at day 56 with mussel than placebo, but there was no difference at day 28 (Pollard et al.). A dvm360 article notes that "studies do not demonstrate consistent improvement."

Nearly all of these trials enrolled dogs already diagnosed with joint disease. None tested GoodYears Mobility. For the full picture, read our guide to what the research on dog joint supplements actually shows, or compare the two main ingredients in glucosamine vs green-lipped mussel.

Why can a chew only hold so much?

A soft chew is a small object. Each Mobility chew weighs 4 g, and its actives add up to about 1,180 mg, close to 30% of the chew's weight. The rest is the chew itself: the base that holds it together, the flavor and the texture that makes a dog willing to eat it every day.

The arithmetic shows the trade-off. Reaching 77 mg/kg of green-lipped mussel for a 60 lb dog would take about 2,100 mg a day. At 150 mg per chew, that is 14 chews. Any ingredient you raise takes space from another, or adds chews to your dog's day.

So we chose to lead with glucosamine, and to include mussel, chondroitin and MSM at the amounts that fit a 1 to 4 chew routine. If you want a study-level mussel amount for your dog, a separate mussel product chosen with your vet is the straightforward route. Our glucosamine dose by weight guide covers the glucosamine side in more depth.

What do we not claim?

• We make no disease claims. Mobility is a daily supplement chew, not a medicine, and it does not replace veterinary care.
• We do not claim our mussel amount matches the amounts used in studies.
• We do not claim MSM has proven benefits in dogs.
• We do not claim the formula itself has been studied. It has not.
• We do not claim glucosamine HCl is better than glucosamine sulfate. AKC notes human data favor sulfate, a point that rests on one source and on people, not dogs.

What we do say: Mobility is a daily chew that supports joint health, mobility and comfort, with every amount on this page.

What allergens are in the chew?

Read this section before you order.

• Shellfish. The glucosamine comes from shrimp and crab, and green-lipped mussel is a shellfish. PetMD advises avoiding both in dogs with a shellfish allergy.
• Oat flour and rye flour. Both are in the chew base.
• Soy lecithin. Also in the chew base.
• Pork-derived chondroitin. Our chondroitin is porcine.
• Duck flavor. The chews are duck-flavored. If your dog has a food allergy, a flavor name alone does not tell you everything, so take the full ingredient list to your vet.

The main side effect VCA lists for glucosamine-type supplements is mild stomach upset. Stop and call your vet if you see signs of an allergic reaction (VCA).

How should you use this page with your vet?

Bring it. Print it or pull it up on your phone at the appointment. It gives your vet the amounts per chew, per day and per kg in one place, which is what they need to judge whether Mobility fits your dog.

Talk to your vet before starting if your dog:

• takes medication, especially NSAIDs, blood thinners or insulin
• is pregnant or used for breeding
• has a known shellfish or food allergy

What are the pre-order terms?

GoodYears Mobility is made in the USA. Here are the facts, without small print:

You can see the full product details on the GoodYears Mobility page.

What to do next

1. Find your dog's weight band and daily chew count on the daily amounts FAQ.
2. Take this page to your vet, especially if your dog takes medication or has allergies.
3. Before buying any joint chew, ours or another, run it through our joint chew label checklist.
4. If you start, note how your dog gets up, handles stairs and walks today, so you have a baseline to compare against over the following weeks.

Questions owners ask

Keep reading

Dosing and daily amountsHow much glucosamine for a dog? Daily amounts by weightHow much glucosamine for a 10, 30, 50, 60 or 100 lb dog? There is no official dose. See the mg/kg math, the one commonly cited figure, and what labels give.Ingredients and evidenceGlucosamine vs green-lipped mussel for dogs: what the research showsGreen-lipped mussel has modest, mixed trial evidence in dogs; glucosamine leans negative for pain. Compare studies, amounts, side effects and shellfish notes.Ingredients and evidenceDo joint supplements work for dogs? What the research actually showsDo dog joint supplements work? Omega-3 has the strongest research, green-lipped mussel is mixed, glucosamine and chondroitin lean negative. See the evidence.Choosing and using a joint chewHow to choose a joint supplement for dogs: 9 things to check on the label before you buyHow to choose a joint supplement for dogs: 9 label checks for taste, allergens, mg per chew, dose by weight, cost per day, freshness, autoship and evidence.

This guide is general information for dog owners, not veterinary advice. If your dog is limping, in pain, or changes suddenly, see your vet. GoodYears Mobility is a supplement: these statements have not been evaluated by the FDA, and it is not intended to diagnose, treat, cure, or prevent any disease.