Boswellic acids

Boswellia serrata gum resin has a long history of use in Ayurvedic and Unani medicine (Kumar 2025). Research extracts are usually standardised to their boswellic acid content, for example 5-Loxin at 30% AKBA (Sengupta 2008).

Not every frankincense is the same. In a cartilage sample study, a Boswellia frereana extract stopped collagen breakdown and lowered MMP13 mRNA, but its main constituent was epi-lupeol rather than a boswellic acid (Blain 2010).

Boswellia serrata extracts have been tested in placebo-controlled trials in people with knee osteoarthritis. Those trials measured MMP-3, collagen breakdown fragments and, in one, MRI cartilage volume and thickness (Sengupta 2008; Sengupta 2010; Kumar 2025; Vaidya 2025). In rats, a serrata extract preserved cartilage aggrecan by turning down MMPs (Shin 2022), and AKBA suppressed MMP13 (Abo-Zalam 2025).

Sources

1. Kumar B, Ghaytidak AB, Pandey AK et al. A Standardized Boswellia serrata Extract Improves Knee Joint Function and Cartilage Morphology in Human Volunteers with Mild to Moderate Osteoarthritis in a Randomized Placebo-Controlled Study. J Am Nutr Assoc 2025.
   PMID 39700461DOI 10.1080/27697061.2024.2438894Our summary
2. Sengupta K, Alluri KV, Satish AR et al. A double blind, randomized, placebo controlled study of the efficacy and safety of 5-Loxin for treatment of osteoarthritis of the knee. Arthritis Res Ther 2008.
   PMID 18667054DOI 10.1186/ar2461Our summary
3. Blain EJ, Ali AY, Duance VC. Boswellia frereana (frankincense) suppresses cytokine-induced matrix metalloproteinase expression and production of pro-inflammatory molecules in articular cartilage. Phytother Res 2010.
   PMID 19943332DOI 10.1002/ptr.3055Our summary
4. Sengupta K, Krishnaraju AV, Vishal AA et al. Comparative efficacy and tolerability of 5-Loxin and Aflapin Against osteoarthritis of the knee: a double blind, randomized, placebo controlled clinical study. Int J Med Sci 2010.
   PMID 21060724DOI 10.7150/ijms.7.366Our summary
5. Vaidya N, Agarwal R, Dipankar DG et al. Efficacy and Safety of Boswellia serrata and Apium graveolens L. Extract Against Knee Osteoarthritis and Cartilage Degeneration: A Randomized, Double-blind, Multicenter, Placebo-Controlled Clinical Trial. Pharm Res 2025.
   PMID 39875757DOI 10.1007/s11095-025-03818-2Our summary
6. Shin MR, Kim HY, Choi HY et al. Boswellia serrata Extract, 5-Loxin®, Prevents Joint Pain and Cartilage Degeneration in a Rat Model of Osteoarthritis through Inhibition of Inflammatory Responses and Restoration of Matrix Homeostasis. Evid Based Complement Alternat Med 2022.
   PMID 36310623DOI 10.1155/2022/3067526Our summary
7. Abo-Zalam HB, Gendy AM, Ali BM et al. Acetyl-11-keto-beta-boswellic acid ameliorates monosodium iodoacetate-induced osteoarthritis in rats: implications of HMGB1/TLR4/NF-κB and Nrf2/HO-1. Front Pharmacol 2025.
   PMID 41403440DOI 10.3389/fphar.2025.1694803Our summary

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