How can a prescriber indicate that a medication substitution is not allowed?

A prescriber can indicate that a medication substitution is not allowed by writing “dispense as written” or “D.A.W.” on the prescription. This notation explicitly instructs the pharmacist that the brand-name medication must be dispensed as specified, rather than being substituted with a therapeutically equivalent generic version. This communication is legally recognized, providing clear guidance that addresses the prescriber's intent regarding the specific medication they want their patient to receive.

In many states, including Minnesota, this practice is important because it protects the prescriber's choice and ensures that the patient receives exactly what was intended. By using this terminology, the prescriber can take an active role in preventing substitution, which can be crucial for patient safety, especially in cases where specific drug formulations, brands, or delivery mechanisms are critical to the patient’s health outcomes.

While other options might seem plausible, they either lack formal recognition in pharmacy practice or do not provide a written directive that is necessary for ensuring compliance with the prescriber’s wishes. For example, merely verbally informing the pharmacist can lead to miscommunication and is not a sufficient or legally binding method. Likewise, while specific codes on electronic prescriptions can be useful, their usage may not always guarantee that pharmacists will adhere to the prescriber’s