Final answer:
The nurse should verify all components of the prescription, which includes the digoxin dosage, method, and frequency of administration to ensure the safety and correct treatment for the patient.
Step-by-step explanation:
A nurse reviewing a medication prescription that reads, 'digoxin 0.25 by mouth every day' should verify the complete prescription with the provider. It's important to check not just the digoxin dosage, but also the method of administration, and the frequency of administration to ensure patient safety and efficacy of treatment. While the prescription does specify the route (by mouth), verifying all components is a safeguard to prevent dosing errors, miscommunication, and to ensure the prescription adheres to optimal therapeutic protocols that align with the patient's health status and the specifics of the drug's pharmacokinetics, such as half-life, dose dependence, and potential side effects.