Research suggests that SAMe may offer modest benefits for joint pain and physical function in osteoarthritis, with two meta-analyses pooling data from multiple randomized controlled trials finding small but meaningful improvements in pain reduction and functional limitation compared to placebo, and comparable results to NSAIDs but with fewer reported side effects. Studies indicate the effect sizes are modest — one meta-analysis estimated roughly 0.4 cm on a 10-cm pain scale — and the evidence for improved physical function has been inconsistent across trials. Several reviews note that while the overall signal is encouraging, the existing body of research is limited by small sample sizes, methodological weaknesses, and quality control concerns around commercially available SAMe products, which as a dietary supplement are not subject to rigorous FDA pre-market review. The authors of the strongest analyses generally conclude that current evidence is insufficient to make firm recommendations, and that larger, better-designed trials are needed before definitive conclusions can be drawn.
Citations from PubMed and preprint sources. Match score (0-100) reflects automated search ranking, not clinical appraisal.
| Title | Type | Year | Direction | Match |
|---|---|---|---|---|
| S-Adenosylmethionine for osteoarthritis of the knee or hip. | Meta-analysis | 2009 | Supports | 98 |
| Safety and efficacy of S-adenosylmethionine (SAMe) for osteoarthritis. | Meta-analysis | 2002 | Supports | 97 |
| Dietary supplements for osteoarthritis. | Review | 2008 | Supports | 90 |
| Treatment of knee osteoarthritis. | Other | 2011 | Supports | 80 |
| SAM-e. | Review | 2006 | Supports | 72 |
| S-Adenosylmethionine (SAMe) for Neuropsychiatric Disorders: A Clinician-Orien... | Systematic review | 2017 | Supports | 70 |
| A genetic method to enhance the accumulation of S-adenosylmethionine in yeast. | Review | 2017 | Supports | 60 |