For the trait, see Fast Metabolism (trait).

With the Fast Metabolism perk, you gain a 20% Health bonus when using Stimpaks.

Fast Metabolism is a Fallout 3 and Fallout: New Vegas perk.


With the Fast Metabolism perk, the player character gains a 20% bonus when using stimpaks. In Hardcore mode, the multiplier increases the amount of healing per second making stimpaks an even better in-combat healing option. Players outside of Hardcore mode may be better served by simply applying multiple stimpaks from their Pip-Boy rather than investing in the perk.

This perk also affects (adapted) alien biogel, which is added to Fallout 3 with the Mothership Zeta add-on.


Synergizes extremely well with Chemist, Better Healing, Cardiac Arrest Old World Blues (add-on) and a high Medicine skill.

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