Replica Morphine in a cardboard box.

These were issued inside the airborne first aid kit and to the Medics in first aid kits.

The tube is solid and contains nothing inside.
Squibb produced a number of packages of their Morphine Syrette. The most popular of these was without a doubt Item No. 9115700 – Morphine Tartrate, 1 Tube. This was the individual tube of Morphine which could be found inside every Parachutist’s First-Aid Packet. This unit consisted of a small, light yellow and red printed box, inside which was contained the Syrette itself, i.e. a collapsible tube with a sterile needle.