Yes, in certain instances, depending on the drugs and the herbs that are involved.While drug/herbal safety is addressed on a case by case basis, there are general principles that are followed.  Certain classes of herbs are to be avoided with certain classes of drugs.  For instance, herbs known as blood moving are to be avoided with blood thinning drugs such as coumadin, because their similar effects could create too strong of an effect.  

We at Whole Health are conservative when recommending herbs to patients taking prescription drugs.  If there is any reason to suspect a negative drug/herb interaction, we will forego prescribing herbs and address the patient’s health condition in other ways, such as acupuncture, and dietary counseling.