Does St. John's Wort Work?
Final Thoughts on the Effectiveness of St. John's Wort
Studies suggest that St. John's wort may be useful for treating depression. However, further research is needed to confirm that the supplement is indeed effective and safe for most uses.
St. John's wort is classified as a dietary supplement, not a drug, and is, therefore, less strictly regulated than drugs. Also, St. John's wort may interact significantly with many medications (see St. John's Wort Drug Interactions for more information). The risks associated with these interactions may outweigh any possible benefits that the supplement provides.