insomnia
"If you can imagine restlessness and extreme sleepiness at the same time, horrible. Walking around in my apartment shaking my arms and legs while being so sleepy and tired was miserable but I have since read that if you are taking medication for seratonin uptake inhibitors that it could cause that so I think it was a side effect. Still ......miserable , so make sure what you are taking with it and discuss with your doctor concerns about drug interactions."