"after trying the patch, ring, and several pills i was recommended levora by my doctor. it made my flow lighter and period shorter. i am sensitive to different birth control and the doctor said it is probably the additives. i went to planned parenthood for levora but they do not carry that exact brand. this time they gave me chateal to try. if you are having a problem with pills from the clinic it can be because of the additives, sometimes it is worth paying the $20 for name brands at the pharmacy. you can get a discount card to make it less expensive. i am worried to try another brand at this point."