how long until I'm back to feeling happy and energetic like I was at the two and a half week mark. I'm currently on 450 mg once a day. I started at 150mg and my physician increased the dosage to 300mg and then 450mg each week. I was feeling very happy and energetic for a couple days after switching to 450mg but I had two beers with some friends and the day after I felt depressed again. I still feel that same feeling of depression since two days ago. When will this feeling stop?