"couldn&#039;t sleep. dr prescribed 50mg and 10 minutes after taking this medicine i felt extreme anxiety and felt panic .  heart racing.  looked it up immediately and saw it was a side effect with some people. but  it is not scarier than not sleeping.  will tell dr next time i go in what happened. now just up when i can&#039;t sleep and hoping there is something that will help. i tried ambien which worked for a while but had an episode of sleep walking on it. i don&#039;t know what else there is to try.  did all the natural otc stuff and exercised more but i still wake up in the middle of the night and can&#039;t fall asleep again. healthy 54 year old woman, 110lbs 5&#039;4.  widowed  started happening after my husband passed away tried antidepressants too"