Medkits stored in the sickbay of a Galaxy class starship.
Medkits (also known as medikits) are pouches used by Starfleet medical practitioners and officers that contain medical equipment for away teams.
In the 2260s a medkit was carried separately from the medical tricorder as a supplement. It contained a hypospray preloaded with up to six drugs in suspension, such as cordrazine, Masiform-D, a neural paralyzer, sterilite, melanex, and tri-ox compound. Also included was a spray applicator, a medical scanner, and a palm-sized reader tube.
In the 2370s the kits were more complex, containing a medical tricorder, a hypospray, a dermal regenerator and trauma kit for emergency medical situations.
They are often kept in strategic positions around Starfleet vessels and bases. The USS Voyager had one located behind the tactical console on the bridge. (VOY: "Projections")
Two Starfleet Medikits: standard and compact.
A more compact medkit is also employed by Starfleet. About the same height as a standard medkit, but it is less wide. (VOY: "The Gift")
The USS Enterprise-D kept extra medkits on hand for relief missions. To prove her loyalty to the Maquis, Ro Laren stole a large quantity of them in 2370. (TNG: "Preemptive Strike")