I recently read a book called the Mood Cure and started following the advice to take 5htp. At first I was like a changed person! I had a more upbeat, positive outlook and felt free of my dark moods for the first time in a long time. But then my blood pressure, which has always been low to normal was consistently up. Worse, it started climbing at night until my head was pounding from the pressure and I felt sick. When I stopped taking it and tried GABA I had some relief from the head pressure but it is back today. Has anyone else supplemented with 5htp and had adverse effects?