NOW Foods Glucosamine & Chondroitin Review

It varies by the specific product — and that's the one thing to check before buying. Some NOW glucosamine-chondroitin SKUs use glucosamine SULFATE (a small evidence edge over HCl, since the Cochrane data favor the sulfate form), while others use HCl. Read the supplement-facts panel on the exact bottle you're ordering. If you can confirm the sulfate version, you get a modest form-quality bump for budget-plus money. If it's HCl, it's still a perfectly good full-dose combo — just in the same form tier as the other US combos. NOW makes several joint SKUs, so don't assume; verify.

NOW's in-house QC labs are genuinely among the most rigorous of any value brand — the company runs extensive internal testing and is known for catching quality issues in its own and third-party ingredients. The honest caveat: that's internal testing, not an independent third-party certification like USP (Nature Made #7) or NSF. So you're trusting NOW's labs rather than an outside verifier. For most buyers, NOW's internal QC reputation is genuinely reassuring; if you specifically require an independent published mark, Nature Made (#7) is USP Verified. NOW's testing is a real strength — just not a third-party stamp.

Two reasons, both honest. First, the form varies by SKU, so the sulfate edge isn't guaranteed — you have to check the panel, and the uncertainty is a small knock in a category where form is what the evidence rewards. Second, it lacks a headline third-party certification (USP/NSF), relying on internal QC instead. Those two factors place it just below picks like Jarrow (#5) and Nature Made (#7). It's a genuinely good, dependable combo at a fair price — the ranking reflects the SKU variability and the absence of an outside cert, not a quality problem.

It's budget-plus — cheaper than the premium combos but a bit more than Kirkland (#2). At roughly $17/month it delivers the full trial dose of both actives, and on a sulfate SKU you get a small form edge Kirkland doesn't offer. Kirkland is still the outright cheapest full-dose combo and delivers the chondroitin at full strength. So: if rock-bottom price is the goal, Kirkland wins. If you want a fair price PLUS NOW's rigorous internal QC and a possible sulfate form, NOW is a sensible step up. Both are dependable budget-tier choices.

On the full-dose SKU it's typically 4 capsules a day — split 2 morning, 2 evening, with food. Run it consistently for 8-12 weeks, then make an honest keep-or-stop call. Glucosamine acts slowly on cartilage maintenance, not acute pain, so the first weeks tell you nothing. If your stiffness and morning ache are meaningfully better by month 3, you're a responder — continue. If nothing has changed, you're most likely a non-responder; stop and reallocate. The large 120-240 cap bottles cover most or all of a trial cheaply.

Very well tolerated — usually just mild GI symptoms (nausea, heartburn) at worst, and one of the safest joint supplements available. The standard glucosamine caveats apply: it's typically shellfish-derived, so shellfish-allergic people should look for a fermented/vegetarian source or avoid it; there's a mild interaction signal with warfarin (possible raised INR), so anticoagulated users should tell their prescriber and monitor; and diabetics should monitor blood sugar when starting, though concerns at supplement doses have largely not held up.

1. [1] Clegg 2006 (GAIT) PMID 16495392 — Glucosamine, chondroitin sulfate, and the two in combination for painful knee osteoarthritis. The NIH-funded GAIT trial (~1,583 patients) found glucosamine HCl, chondroitin sulfate, and the combination were NOT significantly better than placebo for knee-OA pain overall, with only an exploratory moderate-to-severe-pain subgroup signal. Why even a well-tested combo like NOW is framed as a responder trial, not a proven fix.
2. [2] Towheed 2005 (Cochrane) PMID 15846645 — Glucosamine therapy for treating osteoarthritis. Cochrane review: glucosamine's apparent benefit shrank in high-quality trials and concentrated in studies using patented crystalline glucosamine SULFATE. The basis for the small evidence edge on NOW's sulfate-form SKUs over HCl — and for ranking the guaranteed crystalline sulfate (#2) above any SKU-variable combo on form.