Tranexamic acid
"I have only been taking 1 pill 3x a day instead of 2 3x a day, and only on the worst days as soon as it's bad, which in turn caused it to shorten my cycle and definitely the huge clots were gone - what a relief!  I also take iron because of being tired.  Prior to trying this medicine, I had an endometrial ablation which failed and none of the birth control pills helped either.  My only recourse if this stops working is a hysterectomy.  I wish my menopause would start already, I'm done having children and have been having hot flashes for over 5 years now!"