"I&#039;ve been taking Sprintec for exactly two weeks. I have had absolutely no symptoms. There has been no break through bleeding, nausea, headaches. I&#039;ve been breaking out a little more than normal since I started Sprintec but that could also be due to stress. I take it around 7:00 pm or so, right around when I eat, this may be why I have been able to avoid any nausea, so I recommend taking it with something to eat. When it comes to effectiveness, I can&#039;t comment yet until I finish the pack, but I&#039;m sure taking it regularly will make it effective."