Costco’s Kirkland Signature private brand is one of the strongest draws to the mega warehouse chain, on par with the big name brands.

Seniors may benefit from joint supplements that contain glucosamine, chondroitin, and MSM. Some of the popular joint supplements for seniors include Osteo Bi-Flex Triple Strength, Kirkland ...

While chondroitin sulfate and glucosamine sulfate both have well-documented, beneficial effects in patients with osteoarthritis, the exact molecular actions of these drugs are also unknown.