PlainPill

Glucosamine Sulfate

People mainly take Glucosamine Sulfate for pain & inflammation, performance, recovery. Based on 8 first-hand reports and 15 meta-analyses & systematic reviews in the medical literature. Ranked #2249 of 4,149 overall.

14
User score
Mixed
12% positive12% mixed12% negative62% unclear

Of reports that state an outcome, 33% are positive.

Clinical research
AStrong research base
15
meta-analyses
69
RCTs
407
papers

What Glucosamine Sulfate does, according to users

Of the people who reported each effect, the share who said it got better.

2 more with fewer than 3 reports
betterno changeworse

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

AStrong research base

3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.

Inflammopharmacology · 2024 · Meta-analysis / systematic review
Evaluation of efficacy and safety of glucosamine sulfate, chondroitin sulfate, and their combination regimen in the management of knee osteoarthritis: a systematic review and meta-analysis

Conclusion: This meta-analysis revealed that the CS (with decreased pain intensity and improvement in the physical function), and GS (with significant reduction in the joint space narrowing) have significant therapeutic benefits. However, their combination did not significantly improve the symptoms or modify the disease. This may be due to the limited trials that are available on the combination of the sulfate forms of the intervention. Hence, there is a scope for conducting multicentric randomised controlled trials to evaluate and conclude the therapeutic role of CS and GS combination in the management o

PubMed 38581640 ↗
JAMA · 2018 · Meta-analysis / systematic review
Association of Pharmacological Treatments With Long-term Pain Control in Patients With Knee Osteoarthritis: A Systematic Review and Meta-analysis

Conclusion: In this systematic review and network meta-analysis of studies of patients with knee osteoarthritis and at least 12 months of follow-up, there was uncertainty around the estimates of effect size for change in pain for all comparisons with placebo. Larger RCTs are needed to resolve the uncertainty around efficacy of medications for knee osteoarthritis.

PubMed 30575881 ↗
Postgrad Med · 2018 · Meta-analysis / systematic review
Topical therapies for knee osteoarthritis

Conclusion: Although some controversy exists on the role of topical NSAIDs, current management guidelines advise topical NSAIDs as an option and even first-line therapy for knee OA treatment, particularly among elderly patients. Topical NSAIDs may be contemplated as similar options to oral NSAIDs and are associated with fewer gastrointestinal complications when compared with oral NSAIDs. Caution should be taken with the use of both topical and oral NSAIDs, including close adherence to dosing regimens and monitoring, especially for patients with previous complications of NSAIDs. The role of other topical t

PubMed 30156934 ↗
Cochrane Database Syst Rev · 2005 · Meta-analysis / systematic review
Glucosamine therapy for treating osteoarthritis

Conclusion: This update includes 20 studies with 2570 patients. Pooled results from studies using a non-Rotta preparation or adequate allocation concealment failed to show benefit in pain and WOMAC function while those studies evaluating the Rotta preparation show that glucosamine was superior to placebo in the treatment of pain and functional impairment resulting from symptomatic OA. WOMAC outcomes of pain, stiffness and function did not show a superiority of glucosamine over placebo for both Rotta and non-Rotta preparations of glucosamine. Glucosamine was as safe as placebo.

PubMed 15846645 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

1100daily
500 mg2x daily
750mgas reported
1.6 gdaily

Reported side effects

How often each side effect came up across all reports.

No side effects reported so far.

What users say

First-hand experiences, quoted verbatim. We show one positive and one negative where both exist.

“I'm a few years older than you and maintaining a daily regime of glucosamine, chondroitin, msm, and turmeric means that I get through most days without experiencing pain”
HelpedRead the discussion ↗
“Glucosamine and Chondroitin have very spotty results in clinical research. I'd axe them”
Didn't helpRead the discussion ↗
Top discussions (5)

Other options for pain & inflammation

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 3, 2026. How we rate