Does anyone else here suffer from serotonin deficiency?

if you do, please tell me what helps you. I know that you get serotonin from sunlight, but it is so cold here right now that I can't go out for more than a few minutes and I have to be so bundled up that I hardly get any sunlight to hit my skin. I've read about the supplement 5-HTP, have you tried it? does it really work? what are the side effects? I can't take anti-depressants, we've already tried that, they just don't work for me. is there anything else that can help?
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FOR THE RECORD: I am not on any medications at all what so ever, sorry I was not clear when I said that they don't work, I just assumed that since they don't work you'd realize that I wouldn't still be taking them. my bad.
Does anyone else here suffer from serotonin deficiency?
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