what is a gcn for pharmacy?
<answer> A GCN is a stan-dard number assigned by First DataBank to each strength, formulation, and route of administration of a drug entity. <context> entity included on the list. A GCN is a stan-dard number assigned by First DataBank (a drug pricing service) to each strength, formulation, and route of administration of a drug entity; atenolol 25 mg tablets, oral, for example, has its own unique GCN. One drug entity may have multiple GCNs, depending on the product’s available