(a) This article shall not apply to a licensed health care practitioner practicing within his or her scope of practice who prescribes, dispenses, or both, herbs in the course of treatment of patients under the care of the licensed practitioner.
(b) This article shall not apply to herbal products that are sold or distributed directly to a licensed health care practitioner when the herbal product is used solely for the purpose of the treatment of patients under the care of the practitioner.