Psycho (Fallout)

Psycho is a consumable item in Fallout.

Characteristics
Psycho is a powerful combat drug that greatly increases survival chances, particularly for non-player characters who cannot wera armor (eg. Dogmeat). The Intelligence reducing effect will also cause skills to be lowered, though not nearly enough to significantly cripple their use.

Psycho can be (ab)used to lower the player character's Intelligence in order to access "stupid" dialogue (if the Intelligence falls below 4), which can give unique benefits, eg. a cheaper Intelligence upgrade from Lori, which can stack with another one if the Intelligence rises to 3, rather than 4.

Notably, Psycho can also be abused to inflate skills. The player can take Psycho to lower the Intelligence-related skills below the 91% threshold, so that skill books work again.