This item consists of a syringe for containing and delivering the medication and a gauge for measuring the status of the stimpak's contents. When injected, it provides fast healing of injuries, including crippled limbs.
Can be bought from almost any "doctor" in the Commonwealth.
Curie will occasionally give stimpaks upon initiating dialogue after unlocking her as a companion.
Notes[]
Each rank of the Medic perk enhances the efficiency of both stimpaks and RadAway. Rank 1 improves it to 40%, rank 2 to 60%, rank 3 to 80%, and rank 4 to 100%. Rank 4 also increases the speed of stimpak healing. The medicine bobblehead further increases the stimpak's efficiency by 10% multiplicatively; with it, the amount healed becomes 33/44/66/88/100% of the player character's health, respectively.
Stimpaks take 5 seconds to heal by default, which is reduced to 3 seconds with rank 4 of Medic. These numbers are changed on Survival to be 50s and 30s respectively. These durations are unaffected by the medicine bobblehead.
The status effect from stimpaks, with the medicine bobblehead and rank 4 of Medic, show 108.21%, not 100% or 110% like one would expect. Testing done seemed to confirm that the status effect was correct.
Unlike previous installments, Fallout 4 stimpaks deliver over a small amount of time rather than immediately, much like how stimpaks work in Hardcore mode for Fallout: New Vegas.
Unlike Fallout 3 and Fallout: New Vegas, an animation is played when taking any stimpak. This animation is shown only once regardless of the number of stimpaks used and is not shown at all while wearing power armor.
Because of the use animation, only one stimpak can be used at a time if done through the favorites menu, except when in power armor. This can be bypassed by using them in the Pip-Boy inventory, which still requires the animation to be played but lets the player use multiple stimpaks without waiting through multiple animations.
Stimpaks in Survival mode have a dehydrating effect.