http://www.medications.com/effect/view/29817 I have been on Kariva (generic for Mircette) birth control for about 6 years now, I started when I was a junior in high school because of all the symptoms associated with irregular cycles. For the first 3 years I believed it was a miracle drug because my ab Wed, 20 May 2009 16:22:13 -0400 http://www.medications.com/effect/view/29817?item=19973 Make sure you are taking the "placebo" pills too. Mircette's pills all have hormones in them, even the pills for your period week. Those pills contain a small amount of estrogen to avoid hormone shock and headaches. http://www.medications.com/effect/view/29817?item=19973