Under what condition can a pharmacist fill prescriptions written in another state?

Filling prescriptions written in another state is subject to specific legal requirements to ensure that the prescriptions are valid and that practitioners are acting within their licensed scope. The correct answer highlights that a pharmacist can fill prescriptions from another state if the prescriber is licensed in the state where the prescription was written. This requirement ensures that the prescriber is authorized to practice medicine or prescribe medications in the jurisdiction where the prescription was issued.

This is essential in maintaining regulatory standards and protecting patient safety, as practitioners must adhere to the laws of the state in which they are practicing. It ensures that the pharmacist can verify the legitimacy of the prescriber and the appropriateness of the prescription within that jurisdiction's laws.

Other conditions mentioned, such as the residency of the patient or whether the medication is a controlled substance, do not alone determine the pharmacist's ability to fill prescriptions from another state. Additionally, being on the same mailing list as the prescriber lacks relevance to the legal authority or prescriptive rights of the practitioner. Thus, the focus remains on the prescriber’s licensing to uphold the standards of care and compliance with state laws.