Open Source Apothecary At Home / Muscles, joints and nerves

Boswellia, ginger and other joint herbs

Several herbs have small positive trials in osteoarthritis. This page says which and how small.

remedy

Several plant preparations have randomised trials in knee osteoarthritis, and they share a characteristic pattern: an effect over placebo, small trials, uncertain blinding because several of them have a distinctive taste or smell, and heterogeneity between studies. Reporting that pattern honestly is more useful than either dismissing the herbs or promoting them.

Boswellia serrata — the resin, whose active boswellic acids inhibit 5-lipoxygenase. Trials in knee osteoarthritis show improvement in pain and function over placebo in several small studies. It is well tolerated; GI upset is the common effect.

Ginger — has small trials in osteoarthritis, and it is the same plant with the good evidence for nausea. It has antiplatelet activity, which is the main caution.

Rosehip — trials show modest improvement in osteoarthritis pain. Well tolerated.

Avocado-soybean unsaponifiables (ASU) — a standardised mixture with trials showing modest effects in hip and knee osteoarthritis. Well tolerated.

Glucosamine and chondroitin — this is the important one to be honest about. The large, well-conducted trials found that glucosamine did not differ from placebo for pain in knee osteoarthritis, and pooled analyses have been inconsistent with the larger and better-designed trials tending toward no effect. It is safe, it is popular, and the trial evidence for it is weak to negative. It is not a plant remedy, and it is the clearest example in this handbook of a supplement whose popularity survived its trials.

What actually works, and it is not a capsule. Exercise therapy — specifically strengthening the quadriceps and low-impact aerobic exercise — has the best evidence of anything on this page for knee osteoarthritis, and it is free. Weight reduction where relevant. Walking aids. Heat and cold. The herbs above are a reasonable addition to those, never a substitute.

The one thing not to do. Chondroitin and some joint supplements are derived from bovine or porcine sources, which matters to some people for dietary or religious reasons, and this is not always on the label in a way anyone can find.

What the studies found

Preparation

Boswellia

• Standardised extract: trials used 300-400 mg of boswellic acids two to three times daily
• Take with food; GI upset is the common effect
• Give it 4-8 weeks before judging

Ginger

• 0.5-1 g dried ginger daily, as powder in capsules or a tea
• Antiplatelet activity — check with a prescriber if on anticoagulants

Rosehip

• Standardised powder, 5 g daily in the trials
• Well tolerated

Turmeric + ginger + black pepper (traditional blend)

• A household anti-inflammatory tea: 1/2 teaspoon turmeric, 1/4 teaspoon ginger, a pinch of pepper, in warm milk or water with a fat
• Pleasant; not equivalent to standardised trial doses

Topical

• Capsaicin cream or a topical NSAID, which have better evidence than the oral herbs here
• A warm or cold pack, 15-20 minutes, whichever gives relief

The intervention with the best evidence

• Quadriceps strengthening: straight-leg raises, wall sits, and step-ups, building to 2-3 sessions weekly
• Low-impact aerobic exercise: walking, cycling, swimming
• A physiotherapist can prescribe this properly; it is the highest-value thing on the page

Cautions and interactions

• Ginger and boswellia may increase bleeding risk with anticoagulants and antiplatelets.
• Glucosamine: the better trials found no difference from placebo. Do not spend on it expecting an effect, and be aware that shellfish-derived products matter to people with a shellfish allergy.
• Chondroitin and some joint supplements are animal-derived — check if this matters to you.
• Do not mask a joint that needs assessment. A joint that locks, gives way, or has a hot swelling is not osteoarthritis.

When this is not a self-care problem — get help

• A hot, red, swollen joint with fever; or a sudden severe single-joint pain (consider gout and septic arthritis) — same-day assessment.
• Back pain with loss of bladder or bowel control, saddle numbness, or progressive leg weakness — emergency care, possible cauda equina.

Related

• Turmeric, curcumin and osteoarthritis
• Exercise and load: the intervention with the best evidence in this section
• Gout
• Herb-drug interactions: the ones with numbers behind them

Sources

1. Comparative Effectiveness of Nutritional Supplements in the Treatment of Knee Osteoarthritis: A Network Meta-Analysis. Nutrients 2025; doi:10.1016/j.joca.2012.04.002 PubMed 40806131
2. Efficacy of Extracts of Oleogum Resin of Boswellia in the Treatment of Knee Osteoarthritis: A Systematic Review and Meta-Analysis. Phytotherapy research : PTR 2024; doi:10.1002/ptr.8336 PubMed 39314013
3. Evaluation of efficacy and safety of glucosamine sulfate, chondroitin sulfate, and their combination regimen in the management of knee osteoarthritis: a systematic review and meta-analysis. Inflammopharmacology 2024; doi:10.1186/s13018-018-0871-5 PubMed 38581640
4. Efficacy and safety of the combination of glucosamine and chondroitin for knee osteoarthritis: a systematic review and meta-analysis. Archives of orthopaedic and trauma surgery 2023; doi:10.1186/s13018-018-0871-5 PubMed 35024906
5. A Meta-Analysis of the Impact of Nutritional Supplementation on Osteoarthritis Symptoms. Nutrients 2022; doi:10.3390/pharmaceutics13020251 PubMed 35458170
6. A 2022 Systematic Review and Meta-Analysis of Enriched Therapeutic Diets and Nutraceuticals in Canine and Feline Osteoarthritis. International journal of molecular sciences 2022; doi:10.12968/coan.2021.0003 PubMed 36142319