abnormal uterine bleeding
"I used this drug after surgery because of uncontrolled bleeding.  I was going thru a super tampon every 1 or 2 hours for 2.5 days.  After taking 10mg of norethindrone, my bleeding subsided in 8 hours and went back to a 'normal' period and has since completely stopped.

If you take norethindrone long term, you may have breakthrough bleeding almost constantly....I had this happen after 3 months of 10mg x day (as endo treatment), it cleared up about 2 weeks after I went off of the norethindrone and back on regular birth control.  

If you are having heavy or uncontrolled bleeding, I recommend giving norethindrone a try for, it's supposed to work within 24 to 48 hours for heavy bleeding."