Which statement is true regarding prescriptions written in Guam?

In Guam, prescriptions can specify "No substitutions." This means that a healthcare provider can indicate on the prescription whether a pharmacist is permitted to substitute a generic medication for a brand-name medication or if the brand-name medication must be dispensed as written. This allowance provides flexibility in medication dispensing while also respecting the prescriber’s clinical judgment.

By enabling prescribers to specify "No substitutions," the law acknowledges their authority and the importance of certain brand formulations that may be critical for patient health and safety. For example, the prescriber might have reasons to believe that a patient requires a specific brand due to potential differences in bioavailability, formulation, or patient tolerance, among other factors.

In contrast, while the other answer choices may contain some elements of pharmacy practice laws, they do not accurately reflect the regulations that specifically govern prescriptions in Guam. Prescriptions do not inherently require patient consent, nor must they follow a strict three-line format as mentioned, and not every prescription must allow for substitution, as the prescriber can choose to restrict substitutions entirely.