Evidence brief · Supplement
Glucosamine for Osteoarthritis
Evidence grade C — Trial for 8–12 weeks
- Overall grade
- Grade C
- Last revised
- 1
- graded outcome
- 0
- references listed
Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.
1 at grade C — 1 graded row
What is known
Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.
- OsteoarthritisEvidence grade C
Trial for 8–12 weeks
Unclearmixed
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Thin evidence: Osteoarthritis (grade C).
The evidence in words
The verdict
For osteoarthritis, Glucosamine earns evidence grade C (unclear effect, mixed consistency) — the evidence is limited or mixed. Trial for 8–12 weeks
How it might work
It provides cartilage-matrix substrate and may have anti-inflammatory signaling effects; the mechanism has never cleanly matched the clinical results.
How to use it
1,500 mg/day glucosamine sulfate, often with chondroitin; give it 8–12 weeks before judging.
Safety & cautions
Well tolerated; mild GI effects. Older warnings about glucose control appear overstated.
Bottom line
Worth an 8–12 week trial for knee OA at 1,500 mg glucosamine sulfate — some get real relief, many don't. The mortality association is interesting but unproven.
How it is used
As the entry records it, from the studies it summarises. Not a recommendation for you — doses that suit a trial population may not suit you.
- Standard
- 1,500 mg/day sulfate, ± chondroitin.
Goes with
- GlucosamineRead the full Glucosamine monographEvidence grade C
Related reading
Entries that share this one's tags or conditions.
- Boswellia for OsteoarthritisEvidence grade B — Reasonable RCT supportEvidence grade B
- Glucosamine for Cardiovascular mortality (observational)Evidence grade C — Association onlyEvidence grade C
- Glucosamine for Osteoarthritis painEvidence grade C — Split trialsEvidence grade C
- Boswellia for Osteoarthritis pain/functionEvidence grade B — Standardized extractsEvidence grade B
Sources
This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.
Last revised . A grade is this entry's reading of the evidence, not medical advice.