Endometriosis
"I took Lybrel or the generic equivalent Amethyst for many years.  In the first years I found it worked very well for me and I loved it. I never had a period!  Then I needed to take NSAIDs regularly for osteoarthritis which caused constant break through bleeding along with Endometriosis symptoms.  Whenever I discontinued use of the Lybrel to keep my lining from becoming so thin, my periods were dibilitating and extremely heavy.  Just started on Reclipsen with hopes of better results. I recommend this pill for anyone who does not regularly take any meds that can cause blood thinning."