Adenosine preservative-free injection for rapid IV administration in cardiac diagnostic and therapeutic applications. Each 2 mL single-dose vial provides 3 mg/mL concentration, equivalent to Adenoscan®. This antiarrhythmic agent works by slowing AV node conduction and interrupting reentrant pathways. Supplied as 10 vials per package in sterile, single-use format that eliminates preservative concerns and ensures product integrity. NDC 67457085502. Non-returnable sterile product.