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Refined crystalline sodium sulfate (Natrii Sulfas), derived from the mineral glauberite. Enters the Stomach and Large Intestine channels. Salty, bitter, and cold, it is the principal salty-cold purgative for moistening dryness and softening hardness. Paired with da huang in Da Cheng Qi Tang, their combined purgative effect is maximal.
天然硫酸钠经煮炼结晶而成，生品即入药
芒硝置阴凉干燥处风化为白色粉末，药性较和缓，宜用于口腔咽喉疾患
内服宜溶入煎好的药汁或开水中冲服，不宜入煎；外用适量，化水涂敷
Reference range for non-pregnant adults. Not a personalized prescription. Pregnancy, lactation, and pediatric use require specialist supervision.
Contraindicated in pregnancy due to strong purgative action.
Contraindicated during lactation.
Use with caution in children.
Protective guidance only — when to avoid or use with caution. This block deliberately omits pregnancy, lactation, and pediatric dosing: any such use must be managed by a qualified TCM practitioner or appropriate specialist.
孕妇忌用。脾胃虚寒及阴虚体质者忌服。哺乳期妇女慎用。
含硫酸钠，大量服用可引起电解质紊乱（钠潴留、低钾）。心肾功能不全、水肿、高血压者慎用。不宜与三棱同用（十九畏：芒硝畏三棱）。
味苦，寒。主百病，除寒热邪气，逐六腑积聚，结固留癖，能化七十二种石。
上品
@misc{bencaodian-mang-xiao,
author = {{Bencaodian Editorial}},
title = {Máng Xiāo 芒硝 (Mirabilite (Glauber's Salt)) — Natrii Sulfas},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/mang-xiao},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
芒硝主含硫酸钠，为渗透性盐类泻剂，并具外用消炎消肿作用。
Mirabilite is chiefly sodium sulfate — an osmotic saline laxative with topical anti-inflammatory and decongestant uses.
硫酸钠在肠道不被吸收，通过渗透作用保留水分而致泻。
Sodium sulfate is not absorbed in the gut and produces osmotic retention of water to induce purgation.
孕妇禁用——刺激肠道可能引发子宫收缩；脱水、电解质紊乱、肾功能不全者慎用。
Contraindicated in pregnancy — intestinal irritation may trigger uterine contraction; caution with dehydration, electrolyte disturbance, and renal impairment.
芒硝咸苦大寒，软坚泻下，与大黄相须用于阳明腑实证。
Salty-bitter and very cold — softens hardness and purges; paired with rhubarb for yangming organ repletion.
《中国药典》规定 Na₂SO₄·10H₂O 含量不少于 99.0%。
Chinese Pharmacopoeia requires Na₂SO₄·10H₂O content ≥99.0%.
This section is provided for academic reference only and does not constitute medical advice.