This joint-support formula is built on the three most-studied cartilage ingredients — **glucosamine** at 1,500mg, **chondroitin** at 1,200mg, and **MSM** at 1,000mg — and two of the three land right at their clinically studied doses. The 1,500mg of glucosamine sulfate matches the exact daily amount used in the GAIT trial and most European osteoarthritis studies, and the 1,200mg of chondroitin sits at the top of its 800–1,200mg studied range. You get a full four-capsule serving each day, so the label dose is the studied dose — no need to double up.

Here is the honest part: the evidence for this trio is genuinely mixed. Across the GAIT trial and later meta-analyses, glucosamine and chondroitin show modest relief for moderate-to-severe knee pain in some studies and little in others, and **MSM** has a smaller body of research for pain and function. This is a well-dosed version of a stack that helps some people meaningfully and does little for others — not a guaranteed fix for joint discomfort.

The one dose to watch is the MSM: at 1,000mg you are at the floor of its 1,000–3,000mg studied range, where pain-and-function benefits tend to be smaller. It is the branded OptiMSM, distilled for purity, so the form is solid even if the amount sits on the low end. One thing worth knowing — the glucosamine here comes from crab and shrimp shells, so skip it if you have a shellfish allergy.