Er Zhi Wan二至丸
Two-Solstice Pill
Ingredients2 herbs
Indications
Liver and Kidney yin deficiency, mild in degree, sometimes with heat stirring the blood so it leaves the vessels.
Clinical Manifestations
- Dizziness, tinnitus and blurred vision from yin deficiency
- Heavy or prolonged periods with a red tongue
- Premature greying and hair loss
- Aching lower back and knees with dry eyes
Health Categories
Modern Applications
Common adjustments
- Yin deficiency more pronounced — combine with Liu Wei Di Huang Wan 六味地黄丸
- Bleeding prominent — add Sheng Di Huang 生地黄 and Ce Bai Ye 侧柏叶
- Insomnia with night sweats — add Suan Zao Ren 酸枣仁 and Mu Li 牡蛎
Contraindications
Not for Spleen yang deficiency with loose stool or cold in the abdomen — both herbs are cool and Mo Han Lian in particular can loosen the stool. Not for bleeding from cold or from qi deficiency.
For licensed practitioners’ reference only — not a self-treatment guide.
Pregnancy
Generally compatible in pregnancy — a mild cooling yin tonic with no harsh herbs. Use under the guidance of the treating practitioner, and avoid if there is loose stool.
References
Source Yi Fang Ji Jie 《医方集解》 · Qing
- Classical source as recorded in 《医方集解》 (public domain).
2. Scheid, Bensky, Ellis & Barolet. Chinese Herbal Medicine: Formulas & Strategies, 2nd ed. — composition & dosage cross-checked.
3. 《方剂学》（全国中医药行业高等教育规划教材）— pattern analysis cross-checked.
Professional reference notice. Entries are scholarly references for licensed TCM practitioners and students — not medical advice, and not a recommendation to self-prescribe. Chinese herbal formulas should be used under the guidance of a qualified practitioner. Content is an original editorial compilation by Cura x Cura, cross-checked against the cited references.