Final answer:
Prescriptions written by pharmacists should be maintained for at least one year, but the specific length of time varies by state regulations and individual pharmacy policies.
Step-by-step explanation:
Prescriptions written by pharmacists should be maintained for at least one year, but the specific length of time varies by state regulations and individual pharmacy policies. Some states may require that prescriptions be kept for longer periods, such as five years. The purpose of maintaining prescriptions is to ensure patient safety, provide documentation for legal and regulatory purposes, and facilitate future refills or medication history inquiries.