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清热解毒，润肺止咳
补脾益气，缓急止痛
调和诸药用量宜小（1.5–3g），补益用量宜大（6–10g）
For educational reference only — not medical advice.
甘草主含三萜皂苷（甘草酸、甘草次酸）与黄酮类（甘草苷、异甘草素），药理示其抗炎（类糖皮质激素样）、抗病毒、保肝、祛痰镇咳与解毒作用，并能调和诸药。
Gancao contains triterpenoid saponins (glycyrrhizin, glycyrrhetinic acid) and flavonoids (liquiritin, isoliquiritigenin); pharmacology shows glucocorticoid-like anti-inflammatory, antiviral, hepatoprotective, expectorant-antitussive and detoxifying effects and harmonizes formula actions.
《中国药典》以甘草酸与甘草苷作为含量测定指标；复方甘草片、甘草酸制剂等广泛临床应用。
Chinese Pharmacopoeia uses glycyrrhizin and liquiritin as assay markers; compound licorice tablets and glycyrrhizin injections in wide clinical use.
长期大量使用可致假性醛固酮增多症（水肿、低钾、高血压）；与利尿剂、洋地黄、糖皮质激素相互作用。
Chronic high-dose use causes pseudo-hyperaldosteronism (edema, hypokalemia, hypertension); interacts with diuretics, digitalis and corticosteroids.
WHO 建议甘草酸长期摄入不超过 100 mg/日。
WHO suggests long-term glycyrrhizin intake not exceed approximately 100 mg/day.
十八反：不可与海藻、大戟、甘遂、芫花同用。
Classical eighteen-antagonism: avoid with haizao, daji, gansui and yuanhua.
This section is provided for academic reference only and does not constitute medical advice.
Documented interactions exist with the following Western drug classes. Click to view mechanism, severity, and clinical recommendations.
不宜与海藻、京大戟、红大戟、甘遂、芫花同用（十八反）。湿盛胀满、水肿者不宜用。
长期大量服用可引起假性醛固酮增多症（水肿、低钾、高血压）。
味甘，平。主五脏六腑寒热邪气，坚筋骨，长肌肉，倍力，金疮肿，解毒。久服轻身延年。
上品
@misc{bencaodian-gan-cao,
author = {{Bencaodian Editorial}},
title = {Gān Cǎo 甘草 (Licorice Root) — Glycyrrhizae Radix et Rhizoma},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/gan-cao},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}