I just came across this post today - my apologies for the lack of a previous response.
There are certain supplements that seem beneficial in managing anxiety and depression, notably:
trying to increase the amount of Omega-3 Essential Fatty Acids in your diet or via supplements such as salmon oil
chamomile tea seems to have a mild anxiety-reduction (tranquilizing) effect
vitamin B-12 seems to help with depression and perhaps anxiety
Be wary of most "herbal medications" such as St. John's Wort. They may work in some cases but they are not without side-effects and they can interact in surprising ways with other medications such as birth control pills or SSRIs.
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