this article talks about how st johns wort and kava kava can naturally help depression:
"Most people tend to suffer from depression due to various reasons, be it personal problems, family matters or work issues. Depression can be deteriorating to the health and can also be one of the causes for several health disorders like heart attacks, stroke and damage to the brain. Though there are many medications and drugs to treat this debilitating disorder, they can also cause a few side effects. Hence, researchers have discovered some herbs, which can be used to relieve depression in a natural way. These herbal supplements for depression have proven to be quite effective when it comes to treat depression and its symptoms. Dealing with anxiety and depression becomes much easier with the help of these natural supplements for depression as there is no fear of any major ill effects. "
read the rest here: http://www.buzzle.com/articles/herbal-supplements-for-depression.html