In Quake 4, Medikits recover the player’s health. These come in two colors: yellow and gold. Yellow Medikits heal 25 HP, while gold Medikits heal 50 HP. In single player, the large Medkit heals 50 points, while the small Medkit does 25. Medkits are sometimes uncommon especially when there is medic around who can heal the player's health back to 75+, and can heal the player an infinite amount of times.
Medkit in Singleplayer of Q4
Yellow (Q4 Multiplayer)
Gold (Q4 Multiplayer)