Efficacy and Safety of Huanjingjian Decoction in Women With Premature Ovarian Insufficiency

Participants will receive the traditional Chinese herbal formulation Huanjingjian decoction, administered at a dose of one vial (10 ml) twice daily, taken 30 minutes after breakfast and dinner. The intervention will commence immediately following the cessation of menstruation and will continue until the onset of the subsequent menstrual period. Upon the completion of each menstrual cycle, the treatment will be resumed. Each treatment course spans 28 days, with a total of three consecutive cycles administered.

Participants will begin oral administration of Utrogestan (estradiol valerate) on the 5th day of menstruation at a dose of 1 mg daily for 21 consecutive days. Starting from day 17 of treatment, medroxyprogesterone acetate will be added at a dose of 10 mg per day.

Participants will take the placebo oral solution at a dose of 10 mL twice daily (30 minutes after breakfast and dinner). The placebo intervention will commence immediately after the cessation of menstruation and will continue until the onset of the subsequent menstrual period. At the completion of each menstrual cycle, the treatment will be resumed. Each treatment course will last for 28 days, with a total of three consecutive cycles administered.