| ||For an overview of Stimpaks in the Fallout series, see Stimpak.|
|The following is based on Fallout Shelter or Fallout Shelter Online and some details might contradict canon.|
A wonder of pre-War science, stimpaks are typically syringes filled with a mixture of healing agents and stimulants, allowing the user to boost their own body's natural regenerative functions. In most cases, it leads to an almost instantaneous regeneration of wounds. The syringe is equipped with a gauge for quickly identifying the state of the contents and can be used either in an intravenous or intramuscular fashion. Although now commonly used for healing bullet holes and stab wounds, stimpaks were employed professionally through Auto-Docs (in conjunction with morphine and other painkillers) for postoperative care and recovery. Due to their miraculous healing capabilities, stimpaks were ubiquitous across the United States with John Cassidy believing millions were produced before the Great War, and are still abundant several centuries after.
Stimpaks can also be used to treat physical conditions, such as a heart condition, but only temporarily. However, the basic stimpak is designed for use on minor wounds, as the soup of healing medication is ineffective at treating major trauma. A stimpak also does not prevent scarring from excessive third-degree burns or additional extensive scarring as it simply boosts natural regenerative functions. Expiration is a concern for those who use stimpaks, but other than giving a weaker boost to healing, they function just as an unexpired stimpak. Chemists with sufficient knowledge can completely subvert expiration however by creating new stimpaks.
Stimpaks are used to heal 50% of a vault dweller's health, however they cannot heal any radiation damage done to the dwellers, which is marked with a red bar, until it has been removed with RadAway. They can be given to vault dwellers who are sent to explore the wasteland, who will automatically use them when their health gets too low.
There are three basic sources of stimpaks:
- The most stimpaks and radaway a dweller can hold while away from the vault is 25.
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