Study the Effect of Danggui Buxue Tang on Menopausal Symptoms

Inclusion Criteria: * Follicle stimulating hormone (FSH), luteinizing hormone (LH), oestradiol in the menopausal range (FSH\>18 IU/L, LH\>12.6 IU/L, and E2\< 361 pmol/l). * Patients with amenorrhoea for more than 12 months Exclusion Criteria: * Patients with a history of using any form of hormonal replacement therapy within 8 weeks * Patients with a history of using Chinese medicine or other therapies which may affect the outcome within 8 weeks * Patients who in the judgment of the investigator will be unable to comply with protocol requirements * Patients with significant\*\* gastrointestinal, renal, hepatic, bronchopulmonary, neurological, cardiovascular, breast or endometrial carcinoma, or allergic diseases * Patients with uncontrolled hypertension * Patients with undiagnosed vaginal bleeding * Patients with a history of significant drug hypersensitivity