益智仁 / 益智 / 益智子 — Alpinia oxyphylla Miq.

Pinyin: Yìzhìrén / Yìzhì · Malay: Pelaga Biji / Pelaga Nanyang · Family: Zingiberaceae (姜科)

Energetics

Warm (温)

Flavor

Pungent, slightly bitter, aromatic (辛、微苦、芳香)

Meridians

Spleen (脾), Kidney (肾)

Traditional Edict

Warms Spleen to arrest diarrhea and restrain salivation, warms Kidney to secure essence and reduce urination. One of Four Great Southern Medicinals for enuresis, nocturnal polyuria, and drooling.

Cautions & Contraindications

Outer hull must be removed. STRICTLY CONTRAINDICATED in Yin Deficiency with Effulgent Fire (night sweats, red tongue, dark burning dysuria).

Clinical Applications

Overactive bladder (OAB), senile nocturnal polyuria, diabetic bladder neuropathy, Alzheimer's/vascular dementia, and post-stroke salivation.

Quality Markers

Tectochrysin (白杨素甲醚) >= 0.020% & Oxyphyllacinol (Chinese Pharmacopoeia standard)

Mechanism & Phytochemistry

1. Tectochrysin and oxyphyllacinol activate CREB/BDNF, inhibit AChE, and protect against Abeta amyloid neurotoxicity. 2. Nootkatone downregulates muscarinic M3 and P2X1 detrusor contractions, strengthening urethral sphincter tone to halt bed-wetting. 3. Eudesmol suppresses gut hypermotility.

Preparation & Dosage

Hulled seeds crushed before boiling: 3-10 g daily. Salt-Fried Yi Zhi Ren (Yan Yi Zhi Ren - parched with 2% saline) guides warming energy to Kidney channel.

Appended Prescriptions

1. Suo Quan Wan (缩泉丸 - Sovereign Enuresis Formula) with Dioscorea (Shan Yao) and Lindera (Wu Yao). 2. Lingnan Cognitive Longevity Tea with Acorus tatarinowii and Codonopsis.

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Yemama Apothecary · Petaling Jaya, Malaysia · For educational and clinical reference only