birth control
"I've been on Depo for 15 years, I initially started it for birth control, but have since stayed on it because it controls my PMDD. I went off of it once in this time frame, and my PMDD came roaring back, along with my periods. Other than the time I went off Depo, I have not had a period in those 15 years and my PMDD is fully under control while on it. I have not experienced any negative side effects."