I'm scared to death to try it because of the side effects but I am having DAILY migraines and this has been going on several months. I am miserable. Willing to risk the hair loss and weight gain, just got to have some relief! Today is saturday, beautiful outside, and I've been on the couch with a migraine all weekend. Question: neurologist said to take it in the morning but it causes sleepiness. Any reason I can't take it at night?