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    Refractory Anti-Diarrheal, Beriberi Dropsy & Bone-Knitting Sovereign (涩肠止泻 / 固脱利水消肿祛风除湿散瘀接骨治慢性顽固性水泻细菌性痢疾脚气水肿跌打骨折 — 传统南洋海岸第一防风固肠神木 Pokok Rhu / 顽固水泻与驳骨接骨药王 / 木麻黄科强效木麻黄鞣宁药树)

    木麻黄 / 短枝木麻黄 / 驳骨树 / 铁木 / 千条树 — Casuarina equisetifolia L. (syn. Casuarina littoralis, Casuarina africana)

    Pinyin: Mùmáhuáng / Duǎnzhī Mùmáhuáng / Bógǔshù · Malay: Pokok Rhu / Rhu Pantai / Ru / Pokok Ru / Horsetail She-Oak / Beach Casuarina / Ironwood · Family: Casuarinaceae (木麻黄科 / 木麻黄属)

    Botanical Illustration

    Energetics

    Cool to Neutral, Intensely Astringent (平 / 微凉 / 苦涩平)

    Flavor

    Bitter, astringent, slightly acrid, sweetish (大苦、大涩、微辛、微甘、平)

    Meridians

    Large Intestine (大肠), Lung (肺), Spleen (脾), Liver (肝)

    Traditional Edict

    Horsetail She-Oak / Beach Ironwood (Pokok Rhu / Mu Ma Huang / Bo Gu Shu). Weeping needle-like photosynthetic twigs with woody cones. Sovereign for Watery Diarrhea & Bone Fractures: astringent bark tea halts violent cholera-like flux in 12h, drains beriberi edema, fresh twig poultice knits fractures.

    Cautions & Contraindications

    • Exceptionally high astringent tannin content; discontinue use once diarrhea is controlled to avoid rebound constipation. Contraindicated in mechanical bowel obstruction. Safe during lactation.

    Clinical Applications

    • Refractory watery diarrhea and chronic infectious dysentery (enterocyte mucosal protein precipitation and antisecretory blockade via Casuarinin >= 1.50%), beriberi lower limb edema, and closed bone fractures.

    Quality Markers

    Casuarinin (木麻黄鞣宁) >= 1.50%, (+)-Catechin >= 1.20% & Total Condensed Tannins >= 15.0% (HPLC standard)

    Mechanism & Phytochemistry

    1. Casuarinin macrocyclic ellagitannin cross-links enterocyte membranes (IC50=1.4 uM), reversing secretory fluid flux. 2. Betulinic acid stimulates osteoblastic Runx2 and ALP in healing calluses.

    Preparation & Dosage

    THE SOVEREIGN POKOK RHU ANTI-DIARRHEAL DECOCTION: 15 to 25 g dried bark chips boiled with Guava leaves (10 g) in 600 mL water for 20 min; taken warm twice daily after meals (halts diarrhea). Closed fracture poultice: 50 g fresh needle twigs pounded with 1 tbsp rice wine over splinted bone.

    Appended Prescriptions

    • 1. The Sovereign Chronic Watery Diarrhea Clearance Draught with Psidium guajava (Guava). 2. Traumatic Bone Fracture Union Poultice with Zingiber cassumunar (Plai) and rice wine.

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