You are not just expelling something physical, but are also expelling energy. It is easier to experience a new level of clarity after a lot of these energies are cleansed out of you. The more you are in the driver's seat, and conscious of the body and it's needs, the more enjoyable it will be to be in that body and live a fulfilling life. Here are a list of specific herbs, vitamins and minerals commonly recommended for specific problems during your cycle. Was, and still is, used to balance the water cycle more efficiently and ease monthly discomfort.
Leaves are good for balancing the female cycle.
Take if flow is too profuse. Vitamin E helps to restore menstrual regularity. Vitamin K aids in reducing excessive menstrual flow. Smoking aggravates menstrual disorders. This World Wide Web Server houses many sites of interest to the seeker.