Boswellia
Boswellia is one of the best-studied herbs for joint pain, with good evidence for osteoarthritis. AKBA's 5-LOX inhibition makes it a complementary approach to COX-inhibiting NSAIDs. Take with fat for best absorption and allow 4–8 weeks.
Boswellia (Indian frankincense) is studied for its anti-inflammatory effects. NCCIH notes that some research suggests boswellia may help reduce symptoms of osteoarthritis and other inflammatory conditions. MSK says AKBA (acetyl-11-keto-β-boswellic acid) is the most potent anti-inflammatory boswellic acid, inhibiting 5-lipoxygenase (5-LOX) and reducing leukotriene synthesis. Evidence for joint pain relief is among the most robust of any herbal supplement.
Where to get it
We earn a commission if you buy through these links. It doesn't change your price. How we make money
Traditional & historical use
Boswellia serrata has been used in Ayurvedic medicine for over 3,000 years under the name 'Shallaki.' It was used for arthritis, inflammatory bowel disease, asthma, and skin conditions. The resin (frankincense) from the related species Boswellia sacra has been burned ceremonially in the Middle East and North Africa for millennia.
Active compounds & mechanisms
Key compounds: AKBA (acetyl-11-keto-β-boswellic acid), KBA (11-keto-β-boswellic acid), α-boswellic acid, β-boswellic acid, incensole acetate, luteolic acid, boswellic acid esters, terpenes
AKBA is the most potent boswellic acid. It specifically inhibits 5-lipoxygenase (5-LOX), the enzyme that synthesises pro-inflammatory leukotrienes. Unlike NSAIDs, boswellic acids do not inhibit COX-1 or COX-2, which means less risk of gastric irritation and renal side effects. Boswellic acids also reduce NF-κB transcription factor activity, lowering the production of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6). They additionally inhibit cartilage-degrading enzymes (matrix metalloproteinases), potentially slowing cartilage breakdown in osteoarthritis. AKBA is poorly absorbed without fat; formulations combining it with lecithin or phospholipids (e.g., Phytosome) significantly improve bioavailability.
Research & evidence
Strong support Some support Weak or no supportColours show how well the sources back each point. The reason is next to each one.
Boswellia significantly reduces knee pain and stiffness in people with osteoarthritis.
Moderate evidenceSome support. Based on one or a few small trials
Study details
Multiple randomised controlled trials show boswellia extract reduces pain and improves function in osteoarthritis of the knee more than placebo, with effects seen in 4–8 weeks.
Source: NCCIH, Boswellia (Last Updated December 2020), Research Findings View source
AKBA inhibits 5-lipoxygenase (5-LOX), reducing leukotriene synthesis in inflammatory pathways.
Moderate evidenceSome support. Based on one or a few small trials
Study details
MSK notes AKBA is the most potent boswellic acid and specifically inhibits 5-LOX, reducing production of leukotrienes that drive inflammation in arthritis and inflammatory bowel disease.
Source: MSK About Herbs, Boswellia (updated October 2023), Mechanism View source
Boswellia may reduce symptoms of ulcerative colitis and Crohn's disease.
Limited evidenceSome support. The source hedges (“may” or “associated with”)
Study details
Some clinical trials suggest boswellia extract can reduce IBD activity scores, though evidence quality is variable and it is not a standard treatment.
Source: NCCIH, Boswellia (Last Updated December 2020), Research Findings View source
Boswellia reduces radiographic edema in brain tumour patients and may have neuroprotective properties.
Limited evidenceSome support. The source hedges (“may” or “associated with”)
Study details
A randomised trial showed boswellia reduced cerebral edema in patients with brain tumours receiving radiotherapy; this is a specific clinical context but supports anti-inflammatory CNS activity.
Source: MSK About Herbs, Boswellia (updated October 2023), Research Findings View source
Mental health notes
Some emerging research suggests boswellic acids may have neuroprotective effects through anti-inflammatory pathways. Incensole acetate, a component of Boswellia resin, has been studied for anxiolytic effects in animals by activating TRPV3 channels, though human evidence is very limited.
Gut health notes
Boswellia has been studied for inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis. NCCIH notes that some research suggests boswellia may help reduce symptoms of IBD, though evidence is limited.
Dosage
| Form | Amount |
|---|---|
| Capsule | 300–500 mg of boswellia extract (standardised to 60–65% boswellic acids, or ≥10% AKBA) 2–3 times daily; most clinical trials use 900–1,200 mg/day in divided doses; take with fat for improved AKBA absorption |
Side effects
Generally well tolerated. Mild GI symptoms are the main side effect and improve with food. Not a rapid pain reliever — effects build over weeks.
Well documented Reported (case reports, anecdotal or one study) None reportedThe circle shows how well documented an effect is, not how serious it is. A rarely reported effect can still be serious, so always read ‘When to stop’.
| Effect | Frequency | When to stop |
|---|---|---|
| Nausea and GI upsetWell documentedListed plainly by NIH, MSK or LiverTox | Not stated | Stop and talk to a doctor if you notice any unexpected or concerning symptoms. |
| DiarrhoeaWell documentedListed plainly by NIH, MSK or LiverTox | Not stated | Stop and talk to a doctor if you notice any unexpected or concerning symptoms. |
| Skin rashWell documentedListed plainly by NIH, MSK or LiverTox | Not stated | Stop and talk to a doctor if you notice any unexpected or concerning symptoms. |
| Acid refluxWell documentedListed plainly by NIH, MSK or LiverTox | Not stated | Stop and talk to a doctor if you notice any unexpected or concerning symptoms. |
Safety & interactions
Safety
NCCIH states that boswellia is generally well tolerated in clinical studies. MSK notes most adverse effects are mild GI symptoms. It is generally considered safe for up to 6 months in studies. A Boswellia serrata extract called H15 has been used for decades in Germany. The most common side effects are nausea, diarrhoea, and abdominal pain. NCCIH notes that little is known about the safety of boswellia use in pregnancy and breastfeeding.
Contraindications
Avoid during pregnancy without healthcare provider approval, as boswellia may stimulate uterine contractions. Use caution in people with active GI ulcers or significant GI disease. People with liver disease should consult a healthcare provider. If you take blood thinners, NSAIDs, or immunosuppressants, see Drug interactions.
Drug interactions
Boswellia has complementary anti-inflammatory mechanisms to NSAIDs (inhibiting 5-LOX rather than COX). The combination may have additive effects on inflammation. The combination is generally considered safe, but the additional anti-inflammatory effect may need monitoring by a healthcare provider.
Boswellia may have immunomodulatory effects. Concurrent use with immunosuppressants should be discussed with a healthcare provider, particularly in autoimmune conditions.
Limited evidence suggests boswellic acids may have mild antiplatelet effects. Combining with warfarin or antiplatelet medications may slightly increase bleeding risk. Consult a healthcare provider.
Established: stated plainly by an authoritative source. Documented: supported by case reports or trial data. Theoretical: based on mechanism, animal data, or a cautious listing. Always check with your pharmacist or prescriber.
Related
Was this page useful? Rate it · Report a mistake