Depression
"I started taking 150 mg twice a day, and I started feeling a difference since day 1, the very first night I woke up in the middle of the night agitated because a very vivid dream and they only got worse as days went by to the point I could not differentiate dreams with reality and having a lot of trouble to wake up, during the day I was feeling hopeful again and started doing things I had stopped doing but on day 7 approx I had a major panic attack at work feeling like choking due to lack of oxigen and started hyperventilating which I had never experienced before in my life so long story short I ended up in ER that night, even though the paramedics suggested it was gonna go away by itself I still wanted to be checked out, horrible experience"