Final answer:
The question pertains to the legal and ethical requirements for issuing prescription medications, highlighting the necessity for a legitimate medical purpose and adherence to professional standards by the practitioner.
Step-by-step explanation:
The question is about the requirements for prescription medications both controlled substances (CS) and non-controlled substances (non-CS). The prescriptions must be issued for a legitimate medical purpose and written by a practitioner acting in the usual course of his/her professional practice. This means that healthcare providers should only write prescriptions for treatments that are warranted based on a patient's medical condition and within the scope of their medical practice, aligned with standards of care and applicable laws.