I had the Mirena put in last December (2007). After having my 2nd child in October I figured it'd be a while, if ever, before I wanted to get pregnant again. Of course all I had seen and heard until this point was the positive side of the IUD. I had the Mirena in for about 7 weeks and in this time had LOADS of strange side effects. I had flu-like symptoms EVERY single day, my hair started falling out, lower back, neck, and abdominal pain. I also started having tingling pain and numbness in both my hands- especially when I was in bed at night. After visiting my PCP I was told I had carpel tunnel syndrome; strange cause I'd already been a stay at home mom for almost 2 years so I wasn't doing anything different. I was worn out, moody, and beat down with ZERO libido to boot. Having 2 kids under 2 I figured it was from chasing them around all day- until I read the posts on this site and thought maybe it wasn't just me. When I talked to the nurse at my gyno's office (we'd become friends after seeing so much of each other with my 2 kids close in age) she told me that half of the patients that get the Mirena get it taken out soon after and the reason they push it as a "good" form of birth control is because they get a decent kick back from the pharmaceutical company.
I've now been off the Mirena for 3+ weeks and feel like myself again. Even with 2 little ones my energy is back and I don't feel sick anymore! How the FDA can even allow this product on the market is beyond me. I'm sure sooner than later a lawsuit will be filed against Bayer!