The honest summary
Where it helps
Boswellia serrata (shallaki), a resin used in Ayurveda, has the best evidence. A Cochrane review found high-quality evidence from two studies that an enriched extract improved pain and function over 90 days. A large Indian trial found two standardised Ayurvedic formulations as effective as glucosamine and celecoxib for knee pain over six months.[1][2]
Where evidence is thin
Most of the other herbal products in the Cochrane review were each tested in only one or two studies, many at high risk of bias. The Boswellia trials did not measure joint changes on X-ray, and in one small trial X-rays did not change. In the Indian trial, some people on the Ayurvedic formulations had raised liver enzymes, and seven were withdrawn.[1][2]
When to see an allopath
See a doctor promptly if a joint is hot and swollen, if pain gets worse quickly, after an injury, if morning stiffness lasts a long time, or if you have fever or weight loss. These can point to something other than osteoarthritis.[5]
How the texts understand it
The texts describe joint disease of this kind as sandhigata vata, vata lodged in the joints: swelling that feels like an air-filled bag when touched, and pain on bending and straightening the joint.[4]
What trials found
Systematic reviewCochrane review of oral herbal therapies, 49 trials and 5,980 people. Enriched Boswellia serrata extract, 100 mg a day for 90 days, reduced pain by 17 points on a 100-point scale compared with placebo (two studies, 85 people, high-quality evidence).[1]
RCT440 people with knee osteoarthritis, 24 weeks. Standardised formulations of guduchi, ginger, amla and boswellia were equivalent to glucosamine and celecoxib for pain and function. Twenty-six people had raised SGPT (a liver enzyme); 28% of all participants withdrew.[2]
RCT30 people, crossover design, eight weeks each. Boswellia extract reduced knee pain and improved flexion and walking distance compared with placebo. X-rays did not change.[3]
Withheld until review
Related
Turmeric and blood thinners
One reported case of a raised INR, and lab data on liver enzymes. The evidence is thin, but blood thinners leave little margin.
EvidenceDoes ashwagandha reduce stress?
One small, positive placebo-controlled trial. Promising, not settled.
Sources
- Cameron M, Chrubasik S. Oral herbal therapies for treating osteoarthritis. Cochrane Database Syst Rev. 2014;(5):CD002947. PMID 24848732.
- Chopra A, Saluja M, Tillu G, et al. Ayurvedic medicine offers a good alternative to glucosamine and celecoxib in the treatment of symptomatic knee osteoarthritis: a randomized, double-blind, controlled equivalence drug trial. Rheumatology (Oxford). 2013;52(8):1408-17. PMID 23365148.
- Kimmatkar N, Thawani V, Hingorani L, Khiyani R. Efficacy and tolerability of Boswellia serrata extract in treatment of osteoarthritis of knee: a randomized double blind placebo controlled trial. Phytomedicine. 2003;10(1):3-7. PMID 12622457.
- Charaka Samhita, Chikitsa Sthana 28.37 (Vatavyadhi Chikitsa).
- NICE guideline NG226. Osteoarthritis in over 16s: diagnosis and management. 2022. Terms used in this guideline: atypical features.
Awaiting review by The Good Vaidya Medical Board. Prepared from the sources below and checked against each one.
Published 4 November 2026 · Last updated 4 November 2026
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