Don't overlook Omega 3. In "The Omega-3
Connection: The Groundbreaking Antidepression Diet and Brain Program" by
Stoll he uses it on his patients. He is the director of the
psychopharmacology research lab at Harvard. He has treated several cases
with Omega 3 and backs it up with clinical studies. In the book he says
that the studies relied on a minimum of 3,000 mg of Omega 3 and could take a
while to show results but many showed improvement in two or three weeks, others
took six months. Most fish oil supplements have 300 mg of Omega 3, but
it's cheap and has a host of other benefits as well. You can get the kind
of fish oil that is not contaminated with heavy metals and other junk too, or
you can get the prescription variety but that's expensive.
I went through a bout of significant depression about
15 years ago when I was dealing with PTSD. Found that meditation worked
great for me and continue to practice it. In our fast paced society people
forget to slow down and take daily time for themselves. Any form of
relaxation will help but a meditation with grounding is what I use.