How should women drink traditional Chinese medicine for regulating their menstrual cycle?

Patient's question:

Symptom Description: Less menstrual flow, dark color, normal cycle
History of Treatment and Effect: The doctor recommended adjusting with traditional Chinese medicine
Expected Help: I would like to ask if the traditional Chinese medicine I am taking is for regulating the menstrual cycle, and how much should I take each time?

Doctor's answer:

Experts say that in general, menstrual regulation medication can be taken according to the following rules:
1. For irregular menstrual cycles, delayed periods, light or heavy menstrual flow, breast tenderness before menstruation, headaches, insomnia, fever, abdominal pain, etc., medication should be taken 5–7 days before the onset of menstruation.
2. After the onset of menstruation, for light menstrual flow, body aches, dizziness, and vertigo, medication should be started on the first day of menstruation.
3. For early menstrual cycles, heavy menstrual flow, or irregular cycle lengths, medication should be taken 28 days after the start of menstruation.
4. For anovulatory single-phase basal body temperature curves, medication should be taken throughout the menstrual cycle. For elevated basal body temperature curves with prolonged pre-ovulatory phases, medication should be taken after menstruation ends, with a larger dosage. For elevated basal body temperature curves with incomplete luteal regression, treatment should begin after ovulation and continue for one week before the onset of menstruation.