>Stop immediately if any undesirable effects are noticed.
Probably not the best idea since if you are taking something that actually increases serotonin you will give yourself antidepressant discontinuation syndrome by stopping abruptly.
You're exhausting to discuss with, even over the Internet. 300mg is a very normal dose. Serotonin syndrome isn't going to be induced with such conservative dosing.
I never said anything about serotonin syndrome...?? ...
Furthermore, I wasn't even the original GP, so how am I "exhausting?" The only thing I said was supplements are basically unregulated (theres a good chance your bottle of St Johns Wort is actually rice powder * ) and talk to your doctor before taking supplement and before stopping supplements abruptly. Trust me, antidepressant discontinuation syndrome is complete HELL.