the article I posted on Serotonin Deficiency Syndrome. I was trying to post them as one continous piece - which it is - but couldn't do that for some reason. 5 - hydroytrytophan is not the same thing as trytophan, but is one step better. Also read Micheal Murray's book called 5 HTP, as he explains why some people may also need to take certain specific vits and minerals and possibly some St. Johns Wort in conjunction with the 5 H. Fortunately for myself all that was necessary to correct my depression was a few diet changes, some vits, and minerals and natural progesterone as outlined in Dr. John Lee's amazing "What Your Doctor May NOT Tell You... books. Boy what we don't know ...and what a toll that can take is just a crying shame. LOL to you both!