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Fu Zi / Aconite Root (Treated)
Fu Zi
Taste: Acrid • Temperature: Hot • Category: Warm Interior & Expel Cold • Sub Category:

Dosage

1.5-15g, boil 30-60 min before adding other ingredients to reduce toxic properties

Actions

1. Restores devastated yang: for devastated yang disorders where the yang qi is extremely weak & the cold yin is abundant. Symptoms include diarrhea containing undigested food particles, chills, cold extremities, & a faint or imperceptible pulse. This condition often occurs after severe vomiting, diarrhea, or sweating. This herb is critical in these situations since it both assists the Heart yang to unblock the vessesls & improve circulation, & tonifies the Kidney yang to augment the fire & avoid loss of the basal yang.

2. Warms the fire & assists the yang: for any problem associated with weakness or deficiency of the Heart, Spleen, or Kidney yang. It is a widely used herb, especially when the pattern involves interior cold due to yang deficiency.

3. Disperses cold, warms the channels, & alleviates pain: for wind-damp-cold painful obstruction, especially when cold is predominant. Also for cold blocking the Organs, channels, sinews, bones, or blood vessels.

Meridians

Heart, Kidney, Spleen

Cautions

Contraindicated in cases of yin deficiency with illusionary cold & true heat, & during pregnancy. Traditionally this herb was not to be used together with bei mu, gua lou, bai ji, ban xia, or bai wei. According to some traditional sources, this herb antagonizes wu gong & counteracts xi jiao & lu dou. Note that the latter two substances are used to reduce the toxicity of this herb. Toxicity: Fu zi is a very toxic herb. Toxicity waivers widely depending on the source of the herb, when it was harvested, how it was prepared, & how long it was decocted. Preparation usually removes much of the toxicity. A toxic dose is usually far above normal level, on the order of 15-60g. Clinically, atropine has been very effective in treating overdosage of this herb. When gan cao & gan jiang are combined with this herb in decoctions, its toxicity is substantially diminished. Xi jiao, jin yin hua & lu dou also reduce its toxicity. Signs of toxic overdose include drooling, nausea, vomiting, diarrhea, lightheadedness, blurred vision, & numbness in the mouth & extremities. In advanced cases there may be premature atrial contractions, dyspnea, tremors, incontinence, stupor, & reduced temperature & blood pressure.