The Study
Effect of turmeric products on knee osteoarthritis: a systematic review and network meta-analysis
This study is like a big report that collected many experiments where people with knee pain took turmeric or a fake pill. It put all the results together and found that turmeric might help reduce knee pain a little. But because the experiments were not perfect and the results were not all the same, we can't be absolutely sure it works for everyone.
Analysis score
Maximum 100 for a systematic review with meta-analysis.
Where the score came from
Scientists combined 17 studies to see if turmeric helps knee arthritis pain. They found that turmeric reduces pain compared to a fake pill, but we can't be sure because the studies were not strong enough.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 553 / 100
Quality score
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Key takeaways
Summary
Based on the study abstract and findings.
- 1These improvements are moderate and similar to standard painkillers, but the evidence is uncertain.
- 2You might notice relief, but not all products are proven equal.
- 3People taking turmeric reported about 2.5 to 4 points less knee pain on a 0-20 scale than those taking a fake pill.
- 4One special turmeric extract gave a 30% improvement from the start, which patients can feel.
- 5Turmeric combined with regular painkillers reduced pain even more.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
BMC Complementary Medicine and Therapies
Year
2025
Authors
Han Su Wai, T. Pathomwichaiwat, T. Suansanae, S. Nathisuwan, Wipharak Rattanavipanon
Related Content
Claims (6)
Turmeric (curcumin) quickly eases osteoarthritis pain.
Combining turmeric supplements with standard pain relievers reduces knee osteoarthritis pain more than pain relievers alone. This combination cuts pain scores by 70% compared with pain relievers alone.
Bioavailability-enhanced turmeric is not proven to work better than regular turmeric for knee osteoarthritis pain. The apparent advantage seen in combined analyses is influenced by indirect comparisons and baseline pain differences, not by a proven difference in effectiveness.
In adults with knee osteoarthritis, turmeric preparations reduce knee pain by 2.5 to 4.0 points on a standard 20-point pain scale compared with a placebo.
A special form of curcumin, called bioavailability-enhanced curcuminoid, reduces knee osteoarthritis pain by about 30% on a standard pain scale. This improvement is larger than the 20% reduction doctors consider large enough for patients to actually feel a difference.
The studies on turmeric for knee osteoarthritis are too weak to give trustworthy results. The evidence is low quality, so doctors cannot be confident about how well turmeric works.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.