I'm not depressive anymore, but Robin Williams suicide did affect me. The move he played in "Good Will Hunting" had a huge impact on me. I feel sorry that such a great person felt so powerless and depressed to get to this point.
Personally I do not like drugs for any psychological or psychiatric issues except for short term emergency use.
Have you ever tried energy therapies such as EFT, TAT, WHEE or Zpoint? I have seen long term Depression eliminated with these.