Then I ran out of pills. I wasn't sure if it was the St. John's Wort that was causing those effects, so I tried doing without it. After 2 weeks, I'm tired, irritable, and my weight seems to be creeping back up.
So this morning I bought a couple more bottles (two bottles of 60 caplets for $4.50 at Albertsons). It takes a while for St. John's Wort to build up in the system, so it'll probably be at least a couple weeks before I start to see the results.