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.
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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.