; and (B) to deny sales of covered drugs to those under the age of 18. (3) Signage in and around the sales counter outlining the age restriction on sales of covered drugs. (4) Designating one on-duty employee to approve sales of covered drugs. (5) Any other verification measure adopted by a retailer that is designed to ensure that a purchaser of a covered drug is not under 18 years of age if, based on an examination of the purchaser’s identification card, the retailer reasonably concludes the identification card is valid and indicates the purchaser is not under 18 years of age. (c) Exceptions (1) Individuals over 26 A verification system under subsection (a) need not require verification of the age of any individual over the age of 26. (2) Valid prescription A verification system under subsection (a) need not apply to any sale made by a retailer that is a pharmacy pursuant to a validly issued prescription. (3) Valid military identification card A verification system under subsection (a) need not apply to any sale to an individual who supplies proof at the time of such sale that such individual is actively enrolled in the military and presents a valid military identification card. (d) Enforcement In carrying out this section, the Secretary shall coordinate with State entities that regulate retailers, as designated by the State, to perform activities to ensure compliance with this section, including providing for appropriate investigation of complaints related to violations of this section. (e) Compliance with State system If a State has a law under which a retailer in the State is required to have a system that ensures that no individual who purchases a covered drug from the retailer is under 18 years of age, the Secretary shall treat any such retailer in the State that is in compliance with such law as having a verification system as required by this section, including for purposes of sections 301(eee) and 303(h). (f) Definitions In this section: (1) The term covered drug — (A) means a drug that— (i) contains