"i have been on every ssri and different anti-dep the last 15 years. i started niacin 8 weeks ago. i am now on 1,5 g. going up to 3 g. niacin is wonderful. has helped me so much. quite amazing. :) seriously recommend this. 
really strange that this is not more known.
use niacin only after food. i take the 1.5g after work. 3x500mg. going to start 1.5g niacinamide during morning/day-time because it doesnt make you flush. niacinaminde also work for depression, but not the cholesterol. 
probably going over to only niacinaminde after the niacin is empty.
i live in the winter-darkness of norway, so i also take vitamin-d."