In general, herbs are very safe, but should not be taken with prescription drugs without the supervision of a healthcare provider. Recall that herbs have been used for supporting health for literally thousands of years. Remember, however, that herbs are complex compounds containing dozens of different chemicals. When combined with very powerful pharmaceutical drugs there is always the possibility of an effect other than what is desired. For this reason it is always important to discuss any combination of herbs, vitamins, and prescription drugs you are thinking of taking together with your healthcare provider.