Ethinyl estradiol / norethindrone
"I have have been taking Lo Loestrin for 5 months now and only had one short light period, which scares me because I am not used to not having a period. I haven't has any side effects with the birth control. I'm 24 yrs old and about 180lbs, I gain weight very easily with other birth control pills but haven't with Lo Loestrin. I love the pill other than not having a period for 4 months, I'm not sure if that's normal or not, definitely have to speak to the doctor. Lo Loestrin works real well preventing pregnancy,  that's the reason I am sticking with it, and plus it doesn't have all these extra hormones like other birth controls."