Updated 2026-11-04 · AI-assisted evidence analysis

Dasuquin® With MSM Soft Chews Review 2026: What Does the Evidence Show?

Item: Dasuquin® With MSM Soft Chews
Author: HypeCheck

Joint chew claims outrun the dog evidence for its ingredients — Overhyped

"Helps support joint comfort"

Glucosamine and chondroitin dog trials conflict. A 2007 trial with no placebo group saw improvement. A 2023 placebo-controlled dog trial did not show a significant gain for glucosamine/chondroitin on its main measure. Neither abstract identifies the product used. No trial of this chew was found.

Randomised double-blind, positive-controlled trial to assess the efficacy of glucosamine/chondroitin sulfate for the treatment of dogs with osteoarthritis. → · Study of the effectiveness of glucosamine and chondroitin sulfate, marine based fatty acid compounds (PCSO-524 and EAB-277), and carprofen for the treatment of dogs with hip osteoarthritis: A prospective, block-randomized, double-blinded, placebo-controlled clinical trial. →
"ASU helps protect cartilage and support joint function"

ASU dog work comes from induced-injury and healing models, with tissue changes under the microscope. No trial in pet dogs measured pain or mobility. The studied 10 mg/kg/day exceeds what this chew supplies per kg.

Protective effects of total fraction of avocado/soybean unsaponifiables on the structural changes in experimental dog osteoarthritis: inhibition of nitric oxide synthase and matrix metalloproteinase-13. → · Treatment with unsaponifiable extracts of avocado and soybean increases TGF-beta1 and TGF-beta2 levels in canine joint fluid. → · [Healing of osteochondral defects in canine knee with avocado/soybean unsaponifiables: a morphometric comparative analysis]. →
"Research shows glucosamine, chondroitin and ASU work better than glucosamine and chondroitin alone"

The product page cites cell-culture research for this. No dog study comparing the combinations was retrieved, so the claim rests on lab findings, not on dogs.

Dasuquin® With MSM Soft Chews: manufacturer product page →
"Quality and #1 recommendation claims"

The page offers no survey data or named independent test. Nutramax was not on the NASC member list checked 2026-11-03. That list is company-level and does not test individual products.

Dasuquin® With MSM Soft Chews: manufacturer product page → · NASC member list, checked 2026-11-03 →

See full analysis ↓ Methodology →

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Claims vs Evidence

4 claims assessed. Support depends on the study results, formulation, and population. Matching an ingredient or dose alone does not establish a benefit.

"Helps support joint comfort" Stretch

Dog evidence for glucosamine and chondroitin conflicts, ASU has no clinical dog trial in the retrieved sources, and MSM has no dog evidence in this search. Boswellia has one open, uncontrolled dog trial; the chew's Boswellia extract is not identified on the product page, so the match is unknown. Green tea has no single-ingredient dog trial here. No exact-product trial was found.

Source: Study of the effectiveness of glucosamine and chondroitin sulfate, marine based fatty acid compounds (PCSO-524 and EAB-277), and carprofen for the treatment of dogs with hip osteoarthritis: A prospective, block-randomized, double-blinded, placebo-controlled clinical trial. →

Randomised double-blind, positive-controlled trial of glucosamine/chondroitin sulfate in dogs with osteoarthritis

Randomised, double-blind, multicentre, carprofen-controlled; no placebo group; subjective veterinarian scoring · ingredient

Pain, weight-bearing and severity scores improved by day 70 (P<0.001); response slower than carprofen

Limitations: Small; no placebo; subjective scoring; abstract only

Species: dog
Participants / condition: 35 dogs with hip or elbow osteoarthritis
Formulation: Glucosamine hydrochloride plus chondroitin sulfate; brand not reported in abstract
Studied amount, not dosing advice: Not reported in abstract
Duration: 70 days of treatment, reassessed at day 98
Funding / conflicts: Not reported in abstract

Study source ↓

Glucosamine/chondroitin, marine fatty acids and carprofen in dogs with hip osteoarthritis

Prospective, block-randomised, double-blind, placebo-controlled · ingredient

Glucosamine/chondroitin did not produce a significant peak vertical force improvement from baseline at 4 or 6 weeks, unlike the marine fatty acid groups and carprofen; at 6 weeks its change lay between placebo and the other treatment groups. Orthopedic scores did not change in any group.

Limitations: About 15 dogs per group; short; abstract only

Species: dog
Participants / condition: 75 owned dogs with hip osteoarthritis across five groups
Formulation: Glucosamine and chondroitin sulfate product; brand not reported in abstract
Studied amount, not dosing advice: Not reported in abstract
Duration: 6 weeks
Funding / conflicts: Not reported in abstract

Study source ↓

Dietary support with Boswellia resin in canine inflammatory joint and spinal disease

Open multicentre trial comparing before and after treatment; no control group · ingredient

Overall efficacy evident in 71% of 24 eligible dogs after two weeks; significant reduction in lameness, local pain and stiff gait after 6 weeks; brief diarrhea and flatulence in 5 dogs

Limitations: No control group; open design; the chew's Boswellia extract is not identified on the product page; abstract only

Species: dog
Participants / condition: 29 dogs with chronic joint and spinal disease; osteoarthritis confirmed radiologically in 25
Formulation: Boswellia serrata resin extract alone (BSB108, Bogar AG)
Studied amount, not dosing advice: 400 mg/10 kg body weight once daily
Duration: 6 weeks
Funding / conflicts: Not reported in abstract

Study source ↓

"Helps support healthy joints and cartilage" Stretch

Cartilage-related dog findings come only from ASU in induced-injury or defect models, with surrogate tissue markers. The label's ASU amount sits below the per-kg amount studied. The glucosamine and chondroitin dog evidence is mixed and does not address cartilage protection in pet dogs.

Source: Protective effects of total fraction of avocado/soybean unsaponifiables on the structural changes in experimental dog osteoarthritis: inhibition of nitric oxide synthase and matrix metalloproteinase-13. →

Avocado/soybean unsaponifiables in experimental dog osteoarthritis

Placebo-controlled; osteoarthritis induced by ligament transection · ingredient

Smaller macroscopic lesions and less cartilage damage than placebo; lower iNOS and MMP-13 in cartilage

Limitations: Induced injury model, not naturally occurring disease; no pain or mobility outcomes; small; ASU alone, not the chew

Species: dog
Participants / condition: 16 crossbred adult dogs (n=8 per group), induced knee osteoarthritis
Formulation: Avocado/soybean unsaponifiables alone (Expanscience product)
Studied amount, not dosing advice: 10 mg/kg/day
Duration: 8 weeks
Funding / conflicts: Partly funded by Laboratoires Expanscience; some authors are its employees or consultants

Study source ↓

ASU and healing of osteochondral defects in canine knee

Randomised, controlled; surgically created defects · ingredient

More collagen and cartilage-type tissue in repair tissue; more TGF-beta staining

Limitations: Surgical defect model; tissue endpoints only; small; abstract only

Species: dog
Participants / condition: 14 dogs (7 per group)
Formulation: ASU capsules; brand not reported in abstract
Studied amount, not dosing advice: 300 mg every three days
Duration: 15 weeks
Funding / conflicts: Not reported in abstract

Study source ↓

"Research shows the glucosamine, chondroitin and ASU combination works better than glucosamine and chondroitin sulfate alone" No evidence found

The page cites cell-culture work. No dog study comparing this combination with glucosamine plus chondroitin was retrieved in this search.

Source: Dasuquin® With MSM Soft Chews: manufacturer product page →

"ASU helps protect cartilage and support joint function" Stretch

Dog ASU studies are induced-injury, defect-healing or joint-fluid marker studies. None tested pain or mobility in pet dogs with osteoarthritis. Label amounts are below the per-kg amount studied.

Avocado/soybean unsaponifiables in experimental dog osteoarthritis

Placebo-controlled; induced osteoarthritis · ingredient

Less cartilage and subchondral bone damage than placebo

Limitations: Model, not natural disease; no clinical signs measured; small

Species: dog
Participants / condition: 16 crossbred adult dogs, induced knee osteoarthritis
Formulation: ASU alone (Expanscience product)
Studied amount, not dosing advice: 10 mg/kg/day
Duration: 8 weeks
Funding / conflicts: Partly funded by Laboratoires Expanscience; authors employed by or consulting for it

Study source ↓

ASU and TGF-beta levels in canine joint fluid

Controlled comparative study in healthy dogs · ingredient

Higher TGF-beta1 and TGF-beta2 in joint fluid than controls; no difference between the two schedules

Limitations: Biomarker only; healthy dogs; abstract only

Species: dog
Participants / condition: 24 outbred dogs without reported osteoarthritis
Formulation: ASU extract; brand not reported in abstract
Studied amount, not dosing advice: 300 mg every three days or every day
Duration: Up to 3 months
Funding / conflicts: Non-US government research support noted; conflicts not reported in abstract

Study source ↓

ASU and healing of osteochondral defects in canine knee

Randomised, controlled; surgically created defects · ingredient

More collagen and cartilage-type repair tissue

Limitations: Surgical model; tissue endpoints only; small; abstract only

Species: dog
Participants / condition: 14 dogs (7 per group)
Formulation: ASU capsules; brand not reported in abstract
Studied amount, not dosing advice: 300 mg every three days
Duration: 15 weeks
Funding / conflicts: Not reported in abstract

Study source ↓

Signals

The '#1 veterinarian recommended' claim is not backed by any survey data in the reviewed material.
'Backed by science' and 'quality checks beyond industry standards' name no independent test; Nutramax was not on the NASC list checked 2026-11-03.
The label's ASU (45 mg small/medium, 90 mg large per chew) is below the 10 mg/kg/day studied in one dog model.
MSM, a headline ingredient, had no dog results in the retrieved sources.
Per-chew amounts are printed on the label for both the small/medium and large-dog formulas.
The page gives a weight-based chew schedule for the initial and later phases.

Dose vs studies

Label amounts at the label's daily directions, per kg of body weight, compared with what dogs studies used. This compares the label with research. It is not dosing advice.

Glucosamine Hydrochloride No studied amount to compare

Label: 600 mg per chew (small/medium)