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Rooted

Musculoskeletal

Osteoarthritis of the knee

7 plants

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Adjunctive symptom control next to PT and topical NSAIDs — not disease modification. Kitchen turmeric is not a 1–2 g curcuminoid product. Devil’s claw and boswellia have human OA data of mixed quality. Internal comfrey is never in play; topical comfrey is a different, time-limited object on intact skin.

Primary plants

  1. Turmeric (Curcuma longa)
    1
    TurmericHuman data

    Curcuma longa

    Curcuminoid extracts have OA pain-scale trial data. Culinary powder is not the trial product.

    Typical. Extracts often 500–2000 mg curcuminoids/day in various delivery systems. Food spice is a fraction of that.

    Safety. Rare DILI on high-dose/piperine products. Bleeding signal at extract dose. Gallbladder/bile-duct caution.

  2. Indian frankincense (Boswellia serrata)
    2
    Indian frankincenseHuman data

    Boswellia serrata

    Boswellia (AKBA-standardized) has human knee-OA trials. GI upset is the usual limit.

    Typical. Resin extract as labeled; many trials ~100–250 mg AKBA-standardized extract tid or equivalent.

    Safety. GI upset. Not African liturgical frankincense. Product identity is the quality problem.

  3. Devil's claw (Harpagophytum procumbens)
    3
    Devil's clawHuman data

    Harpagophytum procumbens

    Human OA and back-pain trial data. Bitter, ulcer-caution plant.

    Typical. Root extract standardized to harpagoside; monograph-type 600–1200 mg extract/day in divided doses.

    Safety. Avoid PUD, gallstones. Possible additive anticoagulant effect. Not a food.

  4. Ginger (Zingiber officinale)
    4
    GingerHuman data

    Zingiber officinale

    Modest human data for OA pain at gram-level dried rhizome or extract — not dinner ginger.

    Typical. Dried rhizome ~0.5–1 g extract or 2–4 g powder in OA trials; heterogeneous.

    Safety. Extract bleeding signal. Culinary is lower risk.

Supportive plants3
  • Cayenne (Capsicum annuum)
    CayenneHuman data
    Capsicum annuum

    Topical capsaicin is a plant-derived drug with OA-hand/knee data. Burning is the point.

    Typical. Topical 0.025–0.075% cream qid as tolerated. Wash hands. Not for broken skin.

    Safety. Do not use near eyes/mucosa. Not an oral arthritis plant.

  • White willow (Salix alba)
    White willowStrong traditional
    Salix alba

    Salicin → salicylate. This is stacking NSAID-class risk, not a gentler aspirin.

    Typical. Bark decoction/extract per monograph; salicylate yield is variable.

    Safety. Avoid in kids (Reye logic), ulcer, anticoagulants, NSAID allergy, pregnancy 3rd trimester.

  • Comfrey (Symphytum officinale)
    ComfreyHuman data
    Symphytum officinale

    Topical only, intact skin, short course. PA alkaloids make internal use a hard no.

    Typical. Topical cream as labeled, few weeks max, unbroken skin.

    Safety. Never internal. Never on broken skin. Pregnancy/children: no.

Clinical notes

  • If they are already on full-dose NSAID + DOAC, willow and high-dose curcumin are a pharmacy conversation, not a stack.
  • Effusion, hot joint, or inability to bear weight is not OA until proven otherwise.
  • Quads and load management remain the high-value move.

When this is not enough

  • Hot swollen joint ± fever — septic arthritis until proven otherwise
  • Trauma with inability to walk four steps
  • Night pain, unexplained weight loss, history of cancer
  • True locking / giving-way never examined

Rooted is a private clinical reference for licensed practitioners. It is educational, not a treatment protocol, and not a substitute for the chart, the exam, or pharmacy review. Plant medicines interact with drugs and can harm liver, kidney, heart, pregnancy, and children.

All musculoskeletal diagnoses