Question: which herb is used to treat depression?
Answer: St. John's wort. ... 
Ginseng. This supplement comes from the gnarled root of the American or Asian ginseng plant. ... 
Chamomile. A study in 2012 reviewed data about chamomile, which comes from the Matricaria recutita plant, and its role in helping to manage depression and anxiety. ... 
Lavender. ... 
Saffron. ... 
SAMe. ... 
Omega-3 fatty acids. ... 
5-HTP.