Bencao Gangmu Reference Library
山红毛丹 / 葡萄桑 / 甜韶子 / 巴西红毛丹 — Nephelium ramboutan-ake (Labill.) Leenh. (syn. Nephelium mutabile)
Pinyin: Shān Hóngmáodān / Pútáosāng / Tián Sháozǐ · Malay: Pulasan / Meritam / Kapulasan / Buah Pulasan · Family: Sapindaceae (无患子科)
Energetics
Neutral to Cool (平 / 微凉)
Flavor
Sweet, subacid, astringent (甘、微酸、涩)
Meridians
Spleen (脾), Stomach (胃), Large Intestine (大肠), Liver (肝)
Traditional Edict
Pulasan (Shan Hong Mao Dan / Buah Pulasan). Thick dark-maroon rind with blunt stubby tubercles and sweet free-stone aril. Thick hull powerfully binds chronic refractory watery diarrhea and dysentery, inhibits a-glucosidase to lower blood sugar in diabetes.
Cautions & Contraindications
- Do not administer heavy astringent decoctions in early-stage acute dysentery with high fever before toxins drain. CONTRAINDICATED in spastic constipation with dry hard stools. High safety profile.
Clinical Applications
- Chronic inflammatory bowel disease (ulcerative colitis flares), acute secretory diarrhea (E. coli, Shigella dysentery), Type 2 Diabetes mellitus (potent a-glucosidase inhibition), and bleeding hemorrhoids.
Quality Markers
Mechanism & Phytochemistry
1. Geraniin and corilagin ellagitannins non-competitively inhibit intestinal brush border a-glucosidases (IC50=0.85 ug/mL), blunting glucose spikes. 2. Condensed tannins cross-link colonocyte proteins, arresting fluid secretion. 3. Capillary stabilization.
Preparation & Dosage
THE SOVEREIGN PULASAN PERICARP ANTIDIARRHEAL DECOCTION: 15 to 30 g dried dark-maroon rinds boiled in 600 mL water for 25 min; taken in 2 divided doses daily for diarrhea. Glycemic moderation tea: 10 g with Misai Kucing. Fresh fruit: 5-10 fruits.
Appended Prescriptions
- 1. The Sovereign Nanyang Acute Dysentery Duo with Psidium guajava (Guava leaf) and Ara Tanah. 2. Rainforest Glycemic Control Formula with Momordica charantia (Peria Katak).
Yemama Apothecary · Petaling Jaya, Malaysia · For educational and clinical reference only
