Single-Drug Unit Dose Packaging. Automated medication systems that distribute medications in single-drug unit dose packaging may allow for return of unused medications to the system provided that: The medication is returned to a designated common, secure, one-way returns bin; and A licensed pharmacist determines whether the medication is in an unadulterated form. Only a licensed pharmacist may return medications directly to the automated medication system under §A(1) of this regulation. Unused medications distributed from a remote or decentralized automated medication system in a manner other than single-drug unit dose packaging shall be: Returned to a designated common, secure, one-way returns bin; and Returned to the permit holder for proper disposal. Unused medications dispensed from a centralized automated medication system stocked with bulk medications may not be returned to the system.