Abstract: A supplemental medication indication cap is provided for solution containers having a tubular access port. The cap comprises a tubular member adapted to fit about the tubular access port. In one aspect of the invention, the tubular member defines, at one end thereof, several gripper arms adapted for irreversibly engaging the access port, whereby the non-destructive removal of the cap, once it is installed on the access port, is prevented. In another aspect of this invention, the tubular member of the indication cap is an open tube for receiving a needle for further administration of supplemental medication. If no further medication is to be provided, a plug member may be inserted in the tubular member to block access to the tubular access port.