What is Fang Ji? Are Guang Fang Ji, Mu Fang Ji and Han Fang Ji the same?
Current pharmacopoeial Fang Ji (防己) is the dried root of Stephania tetrandra. The official name is Stephaniae Tetrandrae Radix, also called Han Fang Ji or Fen Fang Ji. Guang Fang Ji (Aristolochia) contains aristolochic acid, is banned, and must never substitute. Mu Fang Ji is a different source, more wind-dispelling—not equal-weight Fen Fang Ji. Write Fang Ji or Fen Fang Ji and verify the pharmacopoeial source. Use caution in yin vacuity without damp-heat.
What are the TCM properties and traditional uses of Fang Ji?
According to the Chinese Pharmacopoeia, Fang Ji is bitter and cold, enters the Bladder and Lung channels, and acts to dispel wind and stop pain, promote urination and reduce swelling. It is used for wind-damp painful obstruction, edema and beriberi, inhibited urination, and damp sores. Bitter-cold and downbearing, it suits damp-heat obstruction and lower-burner water-damp—not poor appetite, or yin vacuity without damp-heat.
Does Fang Ji need special processing? Can Guang Fang Ji replace it?
Wash and slice for decoction. Guang Fang Ji must never replace it. Aristolochic acid can cause kidney injury and urinary-tract tumors. Commercial “Fang Ji” must be verified as Stephania tetrandra. Do not mix unlabeled “Han Fang Ji” or “Mu Fang Ji.”
What is the usual dosage? Can it be drunk daily as a diuretic swelling tea?
The pharmacopoeial decoction dose is 5–10 g. It is not a four-season “Fang Ji swelling tea.” Without damp-heat, cold only injures the Stomach. Edema and damp-heat obstruction need a practitioner to name a short course; it does not replace heart-kidney function and joint assessment.
What are the contraindications? Can it be used in pregnancy?
Use caution when appetite is poor and in yin vacuity without damp-heat. Bitter-cold injures Stomach qi; large doses are unsuitable. Pregnancy edema needs a practitioner’s assessment; it is not a calm-fetus or daily diuretic. Stop if poor intake, loose stool and fatigue appear. Anuria, dyspnea and hot swollen joints are emergencies. Guang Fang Ji is forbidden.
Can Fang Ji promote urination, reduce swelling and stop wind-damp pain?
It can help damp-heat obstruction and wind-water or beriberi. Exterior-vacuity edema joins Astragalus, Atractylodes and licorice in Fang Ji Huang Qi Tang. Excess water-rheum joins Zanthoxylum seed, Lepidium and rhubarb in Ji Jiao Li Huang Wan. Damp-heat obstruction joins Coix and talc. It dispels wind, stops pain, promotes urination and reduces swelling—not a specific for every edema or every joint pain. Cardiac and renal edema need conventional assessment.
Can Fang Ji be drunk daily as a blood-pressure, swelling or rheumatism tea?
Damp-heat painful obstruction and lower-limb swelling may enter a short formula; yin vacuity without damp only grows more injured as it drains. “Fang Ji lowers pressure and reduces swelling” does not replace blood-pressure and kidney-function assessment. Dispelling wind, stopping pain, promoting urination and reducing swelling should name Fen Fang Ji 5–10 g.
How do you choose among Fang Ji, Fu Ling, Ze Xie, Huang Qi and Du Huo?
Fang Ji is bitter-cold: dispels wind, stops pain, promotes urination and reduces swelling—damp-heat obstruction and lower-burner water-damp. Poria is sweet-bland-neutral: promotes urination, percolates damp, fortifies Spleen and calms the Heart. Alisma is sweet-cold: promotes urination, percolates damp and drains heat. Astragalus is sweet and slightly warm: supplements qi, raises yang, promotes urination and reduces swelling. Du Huo is acrid-bitter and slightly warm: dispels wind-damp and unblocks painful obstruction—lower-body wind-cold-damp. Damp-heat swelling and pain favor Fang Ji; Spleen-vacuity water-damp favors Poria and Astragalus; simple drainage favors Alisma; wind-cold-damp obstruction favors Du Huo. They may be paired (Fang Ji Huang Qi Tang); yin vacuity without damp forbids Fang Ji; exterior excess without vacuity cautions Astragalus.
Which herbs is Fang Ji combined with? What are the representative formulas?
Exterior-vacuity edema joins Astragalus, Atractylodes and licorice in Fang Ji Huang Qi Tang. Excess water-rheum joins Zanthoxylum seed, Lepidium and rhubarb in Ji Jiao Li Huang Wan. Write pharmacopoeial Fang Ji (Fen Fang Ji) 5–10 g; Guang Fang Ji is forbidden.
How do you choose and store Fang Ji?
Choose firm Fen Fang Ji with a gray-white powdery fracture, sparse radiating lines and a bitter taste. Woody, odd-smelling or unidentified lots—especially suspected Guang Fang Ji—are discarded. Store dry against mold and moths. Buy pharmacopoeial Fang Ji / Stephaniae Tetrandrae Radix; never replace dispelling wind, stopping pain, promoting urination and reducing swelling with Guang Fang Ji or an unidentified root by equal weight.