Hello! Bazhen granules have the effect of tonifying qi and blood, generally suitable for the treatment of patients with low menstrual flow, low menstrual flow is generally affected by the endocrine, the environment, diet, stress is related to, if you usually have normal menstrual flow, after eating Bazhen granules, it is recommended to stop the drug to observe and take a look at the usual pay attention to warmth, I wish you good health!