Norethindrone
"I am glad I came across this page.  I too have had a terrible experience with this pill.  I started them to control my periods and abnormal bleeding however, I have been bleeding for nearly 5 months with only a total 16 days of no bleeding.  They have been heavy and clotted.  I was told that it would take three months for my periods to taper off but it is just as bad now as it was 5 months ago.  I have not experienced any weight gain however on the days where I was not bleeding I was very bloated.  I even went to a couple of doctors thinking that I may have a serious medical condition but they found nothing.  Now I know that I am not the only one who is having this problem.  I have quit taking them and will be switching to a different brand"