RadAway Addiction

 is a form of addiction which can occur in Fallout, Fallout 2 and Fallout Tactics.

Fallout, Fallout 2 and Fallout Tactics
Using Rad Away carries a 10% chance of becoming addicted. This addicition causes you to "feel nauseous" and reduces your Radiation Resistance by 20 for 10 days.

Fallout 3
You cannot become addicted to Rad Away in Fallout 3.

Note
In the German and other censored versions of the games, the addiction images were removed and changed to a normal pipboy images.