Upon patient consent, a pharmacist may adapt drugs as specified in this rule, provided that the prescriber has not indicated that adaptation is not permitted.

(1) Change quantity. A pharmacist may change the quantity of medication prescribed if:

(a) The prescribed quantity or package size is not commercially available;

(b) The change in quantity is related to a change in dosage form;

(c) The change is intended to dispense up to the total amount authorized by the prescriber including refills in accordance with RCW 18.64.520; or

(d) The change extends a maintenance drug for the limited quantity necessary to coordinate a patient's refills in a medication synchronization program in accordance with RCW 48.43.096.

(2) Change dosage form. A pharmacist may change the dosage form of the prescription if it is in the best interest of patient care, so long as the prescriber's directions are also modified to equate to an equivalent amount of drug dispensed as prescribed.

(3) Complete missing information. A pharmacist may complete missing information on a prescription if there is evidence to support the change.

(4) Documentation. A pharmacist who adapts a prescription in accordance with these rules must document the adaptation in the patient's record.