All women want to take dang gui. There is also an endo list called Witsendo. It is a VERY invasive problem and can cause major damage to other organs. I am a member of the endometriosis association. I have just heard of Dan gui.
Herbs are medicine.
Get an appropriate formula prescribe. SAY Hyst. or suffer. The topic is Chinese herbal medicine and acupuncture. It is a blood tonifying herb. The question is do you need yr blood tonified.