Can Er Chen Wan regulate irregular menstruation?

Generally, whether Erchen Wan can regulate menstrual irregularities depends on the specific circumstances. If the menstrual irregularity is caused by phlegm-dampness obstruction, it can usually be regulated; if caused by other factors, it generally cannot be effectively managed. A detailed analysis is as follows:

If menstrual irregularities are caused by phlegm-dampness obstructing the uterus, symptoms may include light menstrual flow, viscous menstrual blood, delayed menstruation, along with body obesity, chest tightness, excessive phlegm, thick and greasy tongue coating, etc., in which case Erchen Wan can usually help regulate the condition. Erchen Wan has the functions of drying dampness, resolving phlegm, regulating qi, and harmonizing the stomach, which can eliminate internal phlegm-dampness and improve the uterine environment, thereby assisting in regulating the menstrual cycle.

When menstrual irregularities are caused by other factors such as deficiency of qi and blood, liver qi stagnation, cold-induced blood stasis, etc., Erchen Wan generally cannot regulate the condition. Menstrual irregularities in these situations are unrelated to phlegm-dampness obstruction, and the effects of Erchen Wan cannot target the underlying causes. Taking it blindly may not improve symptoms and could even negatively affect the body due to inappropriate treatment.

To improve menstrual irregularities, it is advisable in daily life to maintain emotional stability and avoid excessive tension and anxiety. In terms of diet, avoid raw, cold, and spicy foods, and consume appropriately foods that nourish qi and blood such as red dates and longan. Maintain regular作息 (作息 translates as作息 here, but may be better as "作息" or "sleep patterns") and avoid staying up late, while also keeping the abdomen warm to reduce the invasion of cold pathogens and maintain a normal menstrual cycle.