Sargassum (hai zao)

Sargassum pallidum (en S. fusiforme)

Traditionally attributed effects: softens hardenings from phlegm-fire such as goitre and swollen glands; drains fluid.

Safety notes

Not with cold from spleen deficiency. Can contain arsenic and much iodine: not with thyroid disease without consultation. Traditionally not combined with licorice. Traditional use is no proof of effectiveness; if you are pregnant, breastfeeding, taking medication or have a medical condition, consult a doctor or pharmacist.

Preparation

Seaweed. Usually as a decoction, together with other herbs.

Use in traditions

Described in the classical Chinese materia medica, in the group 'herbs that transform phlegm and stop cough'. Because of its iodine the brown seaweed (hai zao) is a classic remedy for goitre in Hai Zao Yu Hu Tang. In Japan and Korea hijiki, a related species, is eaten; because of its high arsenic content moderation is advised.

Applications

Use by tradition

How different herbal traditions describe this herb. Amounts are traditional guidelines checked for obvious errors; they are not medical advice. For poisonous plants no dosage is given on purpose.

Chinese materia medica

Nature and taste: bitter, salty, cold
Meridians: lung, kidney, liver, spleen, stomach

Attributed effects

For goitre and swollen glands from phlegm-fire, oedema and chronic phlegm in the lungs.

Preparation and amount

Traditional dosage: 6–15 g a day, usually in a decoction.

Combinations

With kelp to soften glands and lumps

Ways to prepare herbs: Decoction
Formulas: Hai zao yu hu tang

Sources

All herbs from Asia →