The widely used herbal antidepressant kava is damaging to the liver. Pregnant women should avoid most herbal remedies because of pesticides and preservatives required in the growth and storage of the herbs. Most ayurvedic medicines contain unacceptable levels of lead and other heavy metals. St. John's Wort could complicate any chronic medical condition. Many people see herbal remedies as natural and therefore safe, but in Prescription or Poison?...