Skilled Seeker wrote...
Well Fallout 3 had a form of addiction did it not? It can be done.
And it sucked considering that the only way to detoxify yourself was at a town clinic or home laboratory. Though I'm sure there must have been some mods for a field detox kit.
Moreover addiction in that game was purely chance based and had nothing to do with your PC's chem consumption habits. Not to mention withdrawal effects occurred immediately after the effect of the chem wore off - which isn't exactly how withdrawal works.
As long as they do it right. The Witcher had a toxicity meter for potion use, but I felt it wasn't really generous.