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Hǎi Zǎo 海藻

Pharmaceutical name Sargassum Sargassum, seaweed
Category Transform Phlegm Heat
Key Properties Softens Areas of Hardness
Clears Damp-Heat
Reduces Edema
Properties Bitter
Tropism KD, LV, LU, ST
Actions & Indications 1) Reduces Phlegm and Softens Areas of Hardness
2) Promotes Urination and Reduces Edema
Dosages 6-15g
Contraindications (TCM) Caution with Sp and St Qi Deficiency
Contraindications (Western)
Chemical Composition Alginic acid, mannitol, potassium, iodine, laminine, sargassan, fucosterol, protein, lipids, vitamin C
Pharmacological Effects • Effects on the thyroid gland: has high iodine content and may be used to treat thyroid disorders
• Immunostimulant: intraperitoneal injection increased phagocytic activities in mice
Herb-Drug Interactions • Incompatible with Gan Cao (Glycyrrhizae Radix)
Classical Formula(s)

Hai Zao Yu Hu Tang (Sargassum decoction for the Jade Flask) 海藻玉壺湯

Ju He Wan (Tangerine Seed Pill) 橘核丸


This information is a reference tool for Chinese herbal studies. It is not intended to replace professional medical advice. Please consult a primary health professional if you require health advisory.