Bacta Canister
Bacta Canisters are single-use health packs that can be used in both Singleplayer and Multiplayer. They restore 50 health in Jedi Academy and 100 health in Jedi Outcast.
While in multiplayer the character can only carry one at a time, in Jedi Outcast the player could carry up to five. They only restore 25 health, and they cause Kyle to grunt/moan on use. Force Heal causes a similar effect.
In Jedi Academy, there is a larger variant, called the Big Bacta. Certain Siege classes carry these.