Most Ayurvedic therapies, such as pranayama and rasayana, are unlikely to have bad side effects. Ayurvedic herbs, however, may interact with medications. In addition, heavy metals, such as lead and mercury, have contaminated some Ayurvedic herb supplements. Ask your health care provider about choosing quality supplements for you and your family. Be sure to talk to your doctor before trying Ayurveda, especially if you take medicines or have to eat a special diet (to control diabetes, for example).