The invention provides a syringe for dispensing a drug (1), comprising: a rigid syringe body, a first container (2), in contact with and enclosing the drug; and a second container (3), enclosing the first container, the second container being less gas permeable than the first container, wherein the second container partially or fully forms the rigid syringe body or is held within the rigid syringe body. The invention preserves the drug but allows the drug to be easily accessed without the need for a user to remove a gas barrier structure as a separate action in addition to the other actions needed to deliver the drug.