Actually my psychiatrist is recommending it. I've read up on it. It's is a prescription drug only in Canada. I am aware the issue surrounding the case of EMS.
I believe that was the one (L-Tryptophan) that was discontinued in the U.S. because of some fatalities. Best to discontinue it and speak to your psychiatrist about what might help you. Some trained psychopharmocologists will use natural remedies as mine does but specific that natural remedy can be harmful.