it's probably just a placebo effect. i took st johns wort as lot when i was young (8 to 13) and it didn't do anything. i've taken it again a few years ago and it didn't change anything either.
Only a couple brands of St johns worth are potent antidepressants (kira, perica and a couple others).
Disclaimer: I am not a professional, all my advice is based on my own research and experiences.
"A lie told often enough becomes the truth."
Loving my girl.
Anyone is free to PM me questions or ask my MSN adress.