Final answer:
A prescription cannot be refilled after one year from the date of the original RX. Certain controlled substances may have even stricter refill rules.
Step-by-step explanation:
An RX, or prescription, cannot be refilled after one year from the date of the original prescription. This regulation ensures the medication is still appropriate for the patient and that the patient has consulted with a healthcare provider for a current assessment of their needs. However, it is important to note that certain controlled substances may have stricter refill restrictions, sometimes limiting refills to a shorter timespan, such as 90 days. Moreover, some prescriptions may be non-refillable by their nature, depending on the medication and the directions provided by the prescriber. Always consult with a healthcare provider or pharmacist for specific refill rules regarding individual medications.