bacterial infection
"Got diagnosed with mastitis for the first time this week from a stubborn clogged duct and prescribed 500 mcg 4 pills a day.  Luckily I caught it early and it only took two pills for the mastitis symptoms to go away.  After 6 pills I started to get extremely light headed, dizzy, and disoriented so much so that I couldn't drive and had to have someone babysit because I was afraid I was going to pass out or worse!  My doctor cut my dose down to two pills a day so hopefully that will help the side effects.  I've never experienced such horrible side effects from any medicine!  I don't know what was worse the side effects from this medicine or the mastitis! I'll never take this medicine again!"