First Aid Kit

From BioShock Wiki

Vitastat's General Purpose First Aid Kits contain all the essential items to substantially heal Jack. They are packed into durable, small tin boxes and can be bought from the Circus of Values, found laying on their own or by destroying a Health Station.

With unmodified health, one health pack will completely restore the player's health. With more health, multiple uses may be required. The player can carry up to nine First Aid Kits at a time.

[edit] Applicable tonics

• Medical Expert - increases the amount of health a single kit restores
• EVE Link - each kit also restores a small amount of EVE