"i took this for one to two years. i switched from ortho novum 7-7-7 and had no problems with it. my biggest fear was that the patch would come off. i had a couple of them with corners lifing but they never came off (infact it could be painful when you took it off). i came off it to have a baby. i stopped using it in mid january and was pregnant in february. the patches always leave a &quot;goo&quot; around them. use alcohol to get it off - normal washing doesn&#039;t work."