Buffout Addiction

 is a form of addiction which can occur in Fallout, Fallout 2, Fallout 3, Fallout: New Vegas, and Fallout Tactics.

Fallout, Fallout 2, Fallout Tactics
Using Buffout carries a 25% chance to become addicted. The addiction lasts for a week, beginning 48 hours after consumption. When addicted, you suffer a -2 Strength and Endurance penalty and a -3 Agility penalty.

Fallout 3, Fallout: New Vegas
Using Buffout carries a 10% chance to become addicted. The penalties of being addicted have been significantly lowered, as being addicted only causes a -1 penalty to Strength and Endurance.