The First Aid Kit is a piece of Equipment that is used for restoring health. It is crafted using the Fabricator. It is also obtained from Medical Kit Fabricator which will fabricate one First Aid Kit every 30 minutes if powered.
The medical kit fabricator inside Lifepod 5 provides easy access to First Aid Kits early on in the game but these can also be constructed inside Seabases. First Aid Kits can also be found inside small Supply Crates.
On use, the First Aid Kit restores 50% health of the player's health immediately.