I was recently put on Lyrica. At first it was only 50 mg. But because the nerve blocks are not working to the doctor's delite he uped the dosage to 100 mg. I also had the lightheadedness/dizzyness for the first week of taking them. I still get extremely tired when I take them. Like this morning I took one at 7 am got my son on the school bus came home and passed out for a few hours woke up repeat til 2 pm. I couldn't stay awake for the life of me. I was just drained.