I usually take three capsules of St. John's Wort extract per day, 300 mg each, standardized to contain 0.3% hypericin during times of moderate stress I'd say... but when I really felt bad (ie. depression, anxiety like you wouldn't believe!!! and I mean constantly feeling sick, vomiting, shaking, can't control emotions) I would double that
Here's the disclaimer: I'm not saying that this is for everyone and drop any meds to try this... but from my experience it really did help! and it was noticeable within days of taking the double dose! It brought me out (and another that I recommended it to) of the lowest point in my life. So do your own research, but i really do think its worth looking into. And even at double the recommended dose I experienced no side-effects, that I could tell. I actually regained my appetite after a few days.