Xiao Huo Luo Dan — Minor Invigorate the Channels Pill

On this page

1. Overview
2. TCM pattern
3. Key herbs
4. Formula actions
5. Conditions treated
6. Cautions

Overview

Xiao Huo Luo Dan — the “Minor Invigorate the Channels Pill” — is a Song-dynasty formula from the Tai Ping Hui Min He Ji Ju Fang (1078). It addresses chronic wind-damp obstruction (Bi syndrome) with cold and Blood stasis in the channels, producing fixed, cold, deeply painful joints and limbs that have failed to respond to milder formulas.

The formula is heroic and warming. It uses Chuan Wu and Cao Wu (both forms of aconite) combined with Tian Nan Xing, Ru Xiang, Mo Yao and Di Long (earthworm). This combination powerfully dispels Wind-Damp-Cold from the channels, transforms Phlegm-stasis in the joints, moves Blood and relieves deep pain.

I prescribe Xiao Huo Luo Dan as part of bespoke herbal formulas from pharmaceutical-grade granules sourced from Sun Ten in Taiwan.

TCM pattern

Xiao Huo Luo Dan is prescribed for chronic Wind-Cold-Damp obstruction with Phlegm and Blood stasis:

• Chronic joint pain — fixed, deep, severe
• Joint deformity from long-standing inflammation
• Numbness or tingling of limbs
• Stiffness — particularly cold-aggravated
• Pain worse with cold weather
• Restricted joint range of motion
• Hemiplegia from chronic stroke
• Cold extremities
• Tongue — pale to purplish, white moist coat
• Pulse — wiry, slow, possibly tight

Key herbs

1. Chuan Wu (prepared aconite root) — powerfully warms and dispels Wind-Cold-Damp from channels
2. Cao Wu (prepared wild aconite) — warming, channel-opening
3. Tian Nan Xing (prepared) — dries Damp, transforms Phlegm
4. Di Long (earthworm) — opens the channels and breaks Wind-Phlegm
5. Ru Xiang (frankincense) — moves Blood and relieves pain
6. Mo Yao (myrrh) — pairs with Ru Xiang to move Blood

Formula actions

1. Dispels Wind-Cold-Damp from the channels
2. Transforms Phlegm
3. Moves Blood and breaks stasis
4. Opens the channels and relieves pain

Conditions treated

1. Chronic rheumatoid arthritis with cold-pattern joint pain — see rheumatoid arthritis
2. Osteoarthritis with deformity
3. Chronic gout between flares
4. Frozen shoulder chronic stage — see frozen shoulder
5. Chronic post-stroke hemiplegia with cold-Blood-stasis pattern
6. Trigeminal neuralgia with chronic cold-Wind pattern — see trigeminal neuralgia
7. Chronic sciatica with cold-damp pattern — see sciatica
8. Peripheral neuropathy with Wind-Damp-Cold pattern

Cautions

Contains Chuan Wu and Cao Wu (toxic aconite alkaloids). Use only pharmaceutical-grade, properly processed (zhi) preparations from reputable suppliers. Self-prescribing is dangerous.

Stop immediately and seek advice if numbness around the mouth, tingling extremities, palpitations, chest tightness or vertigo develop — these can indicate aconite toxicity.

Contains Di Long (earthworm), an animal product. Vegetarian patients can request modification.

Strictly contraindicated in pregnancy.

Not appropriate for hot-pattern arthritis (red, hot, swollen joints) or Yin-deficient patterns.

Use cautiously in patients with cardiac arrhythmias, heart failure or on warfarin or other anticoagulants.

Inflammatory arthritis must be diagnosed and monitored by rheumatology; this formula is an adjunct to disease-modifying treatment, not a substitute.

Always consult a qualified Chinese herbalist registered with the RCHM.

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