Best Boswellia Supplement 2026: Ranked by Disclosed AKBA
The best boswellia for most people is Life Extension Boswellia (AprèsFlex): 100 mg of AprèsFlex, the extract and amount used in knee arthritis trials, for $0.28 a day. For knee pain, boswellia probably helps a little, and the evidence is limited. Of the 13 we compared, 4 print their AKBA, one of boswellia’s active acids.
By Erin Rose Updated October 19, 2026 How we score
Our pick for: Most people
- Extract a day
- 100 mg1 capsule of AprèsFlex
- AKBA
- 20%Printed on the label
- Testing
- Brand claimCertificate of analysis; no lab named
- Cost
- $0.28 a dayBrand price; Amazon’s can differ
Why we pick it One capsule holds 100 mg of AprèsFlex, the extract and amount used in knee arthritis trials, and it costs the least of the trial extracts we link.
What you give up It is not on NSF/ANSI 173 or the other testing lists we checked; Life Extension offers its own certificate of analysis. Want one on a list? See Thorne below.
Which boswellia is right for you?
Here are the other good choices.
Want one on a testing list?
NSF/ANSI 173, which checks that a product matches its label, lists Thorne Boswellia Phytosome. It is the only boswellia we link that is on NSF/ANSI 173. Thorne directs two 350 mg capsules a day, which costs $1.97 a day at its price. We found no knee trial of this form, and the label prints no boswellic acid percent.
Thorne Boswellia Phytosome
6.5/10 · $1.97 a day · NSF/ANSI 173
Want to spend less?
Double Wood gives 1,000 mg of an extract standardized to 65% boswellic acids in two capsules, for $0.17 at its own price. We found no trial that tested its extract, and its “third-party tested” badge names no lab.
Double Wood Boswellia
6.0/10 · $0.17 a day
Taking a blood thinner or other medicine?
Ask your doctor before adding boswellia, and do not stop a medicine. See what the research found.
Boswellia supplements we compared
We scored 13 boswellia products on dose, testing, cost, label and recalls; here are the 8 we link. Our pick comes first, then by score. Costs are for one day at each label’s directions and each brand’s own price, checked October 19, 2026.
| Boswellia | Per day | Why it is or is not a pick |
|---|---|---|
| Life Extension Boswellia (AprèsFlex)8.5/10 | $0.28 | Our pick: 100 mg AprèsFlex (20% AKBA), the trial extract and amount; brand certificate only |
| Thorne Boswellia Phytosome6.5/10 | $1.97 | Our pick if you want a tested product: on NSF/ANSI 173; 2 capsules a day; no knee trial of this form |
| Double Wood Boswellia6.0/10 | $0.17 | 1,000 mg of a 65% extract in 2 capsules, low cost; no trial of this extract found; brand badge only |
| Swanson Boswellia (5-LOXIN)5.0/10 | $0.83 | 125 mg 5-LOXIN (30% AKBA) a capsule, a trial extract; label says 2 a day; no testing claim |
| Pure Encapsulations Boswellia AKBA5.0/10 | $0.57 | 100 mg 5-LOXIN, a trial extract and amount; costs about twice our pick; no testing claim |
| Terry Naturally BosMed 5005.0/10 | $0.74 | 500 mg BOS-10 (10% AKBA); we found no trial of this extract; costs more |
| Carlyle Boswellia4.5/10 | $0.09 | A 375 mg blend; the 1,200 mg on the front is an herbal equivalent |
| NOW Boswellia Extract 500 mg3.5/10 | $0.33 | 500 mg extract (65% organic acids); no trial of this extract found; no testing claim |
How to read a boswellia label
Look for a named extract, such as 5-LOXIN or AprèsFlex (also sold as Aflapin), and its milligrams; those are the best-studied extracts. A boswellic acid percent alone does not match a tested product, and an “herbal equivalent” is not the weight of the extract inside.
Does boswellia work?
For knee arthritis, probably a little. In a Cochrane review, two trials with 85 people found 100 mg a day of an enriched extract for 90 days lowered pain by 17 points on a 0 to 100 scale; the summary does not name the extracts (Cameron 2014). The AprèsFlex trial we cite ran 30 days with 60 people (Vishal 2011). A review of 7 trials agreed (Yu 2020), but a 2024 review of 13 studies found no clear effect overall because the studies differed so much (Dalmonte 2024), and no supplement had a clinically important effect on pain in the long term (Liu 2018). Several trials list authors from the companies that make the extract (Sengupta 2008; Majeed 2024). More in our boswellia guide.
Questions people ask
How long does boswellia take to work?
In trials of branded extracts, pain scores improved within 5 to 7 days (Vishal 2011; Sengupta 2008). A review advises taking it for at least 4 weeks (Yu 2020).
Does boswellia help Crohn’s disease?
A year-long trial found no benefit: 59.9% on boswellia and 55.3% on placebo stayed in remission, and it was stopped early (Holtmeier 2011).
Is boswellia safe?
Reviews found no serious side effects and no more side effects than placebo, in trials of 30 to 180 days (Cameron 2014; Liu 2018). We found no studies in pregnancy. If you take a blood thinner or other medicine, or are pregnant or breastfeeding, ask your doctor first.
How we score
Five marks: does a serving hold an extract trials tested (5-LOXIN or AprèsFlex) at a trial amount; is the product on a public testing list; what a day costs at the label’s directions and the brand’s own price against the cheapest of its kind (trial extracts, or other extracts); does the label state the amount outside a blend; and the brand’s FDA recall record. Dose and testing are worth up to 3 points each, cost up to 2, label and recalls up to 1 each. More on our method.
Sources
- Cameron M, et al. “Oral herbal therapies for treating osteoarthritis.” Cochrane Database Syst Rev. 2014. PubMed 24848732
- Yu G, et al. “Effectiveness of Boswellia and Boswellia extract for osteoarthritis patients: a systematic review and meta-analysis.” BMC Complement Med Ther. 2020. PubMed 32680575
- Dalmonte T, et al. “Efficacy of Extracts of Oleogum Resin of Boswellia in the Treatment of Knee Osteoarthritis: A Systematic Review and Meta-Analysis.” Phytother Res. 2024. PubMed 39314013
- Liu X, et al. “Dietary supplements for treating osteoarthritis: a systematic review and meta-analysis.” Br J Sports Med. 2018. PubMed 29018060
- Sengupta K, 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. PubMed 18667054
- Vishal AA, et al. “A double blind, randomized, placebo controlled clinical study evaluates the early efficacy of aflapin in subjects with osteoarthritis of knee.” Int J Med Sci. 2011. PubMed 22022214
- Majeed A, et al. “A standardized Boswellia serrata extract shows improvements in knee osteoarthritis within five days-a double-blind, randomized, three-arm, parallel-group, multi-center, placebo-controlled trial.” Front Pharmacol. 2024. PubMed 39092235
- Holtmeier W, et al. “Randomized, placebo-controlled, double-blind trial of Boswellia serrata in maintaining remission of Crohn's disease: good safety profile but lack of efficacy.” Inflamm Bowel Dis. 2011. PubMed 20848527
- Testing list: NSF/ANSI 173, read August 25, 2026. Labels and prices from each brand’s own page.