May cause allergic reaction. May enhance effects of MAO inhibitors. Do not take with anti-depressants or alcohol. Large amounts may cause diarrhea. See disclaimer below.
Clinical evidence is inconclusive.
Except where noted in comments, research indicates these 10 herbs appear to be safe when used appropriately . Herbs generally are not recommended for people suffering from autoimmune disorders or liver disease, people undergoing surgery or other invasive medical procedure, pregnant or lactating women, or infants and small children. Use herbs only for minor conditions and only for the short-term. Discontinue if you experience any adverse side effects. References Abramov, V. Traditional Medicine .