Here is the Consumer Labs pharmaceutical analysis which gives Cosamin DS a good rating but does not evaluate the products very well essentially measuring content only.
EXAMPLES
† OF RESULTS OF CONSUMERLAB.COM
TESTING OF JOINT SUPPLEMENTS (GLUCOSAMINE, CHONDROITIN, AND MSM
)
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Name of Product, Claimed Type and Amount of Key Ingredient per Unit and Suggested Dose on Label
Manufac-
turer
or
Distri-
butor
CLAIMED AMOUNT OF INGREDIENT (Per Daily Serving Suggested on Label) (Click on "Ingredients" for Full Listing)
Test
Results:
(See Passing
Score for More Information on Review Criteria)
OVERALL
RESULTS:
APPROVED
(Passed)
or
NOT
APPROVED
(Failed)
Contained
Claimed Amount of Key Ingre-
dients
(Glucos-
amine, Chondroi-
tin, MSM )
Disinte-
grated Properly
(NA = Not Applic-
able)
SUPPLEMENTS FOR HUMAN USE
Cosamin®DS
Double Strength Joint Health Supplement (500 mg Glucosamine Hydrochloride
and 400 mg Sodium Chondroitin Sulfate per capsule, 3 per day)* 