What is Ze Xie? Are Yan Ze Xie, Fu Ling and Che Qian Zi the same?
Official Ze Xie (泽泻) is the dried tuber of Alisma orientale or Alisma plantago-aquatica. The pharmacopoeial name is Alismatis Rhizoma. Fujian Jian Ze Xie is well regarded. Yan Ze Xie is salt-fried, slightly salty, directed to the Kidney to drain heat. Fu Ling is sweet-bland-neutral: drains damp, strengthens the Spleen and calms the Heart—a sclerotium, not a tuber. Che Qian Zi is sweet-cold: clears heat, promotes urination, percolates damp, frees strangury, brightens the eyes and dispels phlegm. Write Ze Xie or Yan Ze Xie. Kitchen “Alisma tea” is not the pharmacopoeial 6–10 g in decoction.
What are the TCM properties and traditional uses of Ze Xie?
According to the Chinese Pharmacopoeia, Ze Xie is sweet, bland and cold, enters the Kidney and Bladder channels, and acts to promote urination and percolate damp, drain heat, and transform turbidity to lower lipids. It is used for difficult urination, edema with distention, diarrhea with scant urine, phlegm-rheum dizziness, hot strangury with painful dribbling, and hyperlipidemia. Sweet-bland-cold, it suits water-damp and lower-burner damp-heat—not long use in Kidney vacuity with seminal slip without damp-heat, or Spleen-Stomach deficient cold.
How do you choose raw versus salt-fried Ze Xie?
Promoting urination, percolating damp and phlegm-rheum dizziness more often use raw Ze Xie; draining vacuity fire of the Kidney channel and entering the lower burner more often use Yan Ze Xie. Bran-frying is also seen and leans toward percolating damp. Do not take it long as a single-herb “lipid-slimming tea” in large amounts.
What is the usual dosage? Can it be drunk daily as a damp-draining lipid tea?
The pharmacopoeial decoction dose is 6–10 g. It is not a four-season “Ze Xie lipid tea.” Vacuity without damp and seminal slip only drain further. Edema, dizziness and lipids need a practitioner to name raw or salt-fried and a short course; it does not replace lipid-drug assessment.
What are the contraindications? Can it be used in pregnancy?
Forbid in Kidney vacuity with seminal slip and no damp-heat. Use caution in Spleen-Stomach deficient cold with loose stool. Pregnancy needs a practitioner. Stop if dry mouth, diarrhea or dry skin appear. Tell the practitioner if you use diuretics, antihypertensives or hypoglycemics.
Can Ze Xie promote urination, drain heat and stop dizziness?
It can help water-damp accumulation. Accumulated water with difficult urination joins Poria, Polyporus, Atractylodes and Cinnamon Twig in Wu Ling San. Phlegm-rheum dizziness joins Atractylodes in Ze Xie Tang. Hot strangury joins Plantago seed and talc. Sweet-bland, it percolates and drains heat—not a specific for every edema, every dizziness or every high lipid level. Acute kidney failure and intracranial vertigo are emergencies.
Can Ze Xie be drunk daily as a slimming, lipid-lowering or damp-draining tea?
Water-damp edema and phlegm-rheum dizziness may enter a short formula; Kidney vacuity with seminal slip and Spleen cold only empty further. “Ze Xie lowers lipids and slims” does not replace metabolic and urologic assessment; the pharmacopoeial heading “transform turbidity and lower lipids” is a traditional-modern indication, not a single-herb specific. Promoting urination, percolating damp and draining heat should name Ze Xie 6–10 g.
How do you choose among Ze Xie, Fu Ling, Zhu Ling, Che Qian Zi and Bai Zhu?
Alisma is sweet-bland-cold: promotes urination, percolates damp, drains heat and transforms turbidity to lower lipids—Kidney-Bladder, stronger diuresis plus clearing the lower burner. Poria is sweet-bland-neutral: drains damp, strengthens the Spleen and calms the Heart—neither cold nor hot. Polyporus is sweet-bland-neutral: drains damp—strong diuresis without tonification. Plantago seed is sweet-cold: clears heat, promotes urination, percolates damp, frees strangury and brightens the eyes. Atractylodes is bitter-sweet-warm: strengthens Spleen qi, dries damp and promotes urination—tonifies the Spleen to govern water. Accumulated water favors Ze Xie with Fu Ling and Zhu Ling (Wu Ling San); dizziness favors Ze Xie with Bai Zhu (Ze Xie Tang); hot strangury favors Che Qian Zi. They may be paired; Kidney vacuity with seminal slip and no damp-heat forbids pure percolation.
Which herbs is Ze Xie combined with? What are the representative formulas?
Accumulated water with difficult urination joins Poria, Polyporus, Atractylodes and Cinnamon Twig in Wu Ling San. Phlegm-rheum dizziness joins Atractylodes in Ze Xie Tang. In Liu Wei Di Huang Wan it pairs with prepared rehmannia and Cornus to drain Kidney turbidity. Write raw or Yan Ze Xie 6–10 g.
How do you choose and store Ze Xie?
Choose large firm tubers with a yellow-white powdery cross-section, many fine pores, few rootlets, a faint odor and a slightly bitter taste; Jian Ze Xie is preferred. Hollow, moldy, moth-eaten and starch-adulterated lots are discarded. Store dry against moths. Buy pharmacopoeial Ze Xie; do not replace promoting urination, percolating damp and draining heat with an unidentified tuber by equal weight.
