I found taking 1x1800mg St Johns Wort per day to be very effective for relieving SAD related mild depression. The only side effect was after about a month I started to get sore eyes. So I stopped taking St Johns Wort for a week at that time my eyes were no longer sore and I'm now taking 1x1800mg of St Johns Wort just every other day so as not to get sore eyes. I also have a daylight bulb in my living room but I cant say that this has had any effect certainly not as good as the St Johns Wort.