[mistercow]

>Modafinil. Stay away from it. The stuff is wickedly addictive and many people have experienced significant long-term side effects, especially if they try to go off it.

I have known quite a number of people who have taken modafinil, and none of them experienced more than minor side effects. I have several friends who stopped using it for long periods because they built a tolerance (tolerance != addiction), but none experienced withdrawal symptoms.

I used adrafinil for a while because it has the advantage of being unscheduled in the US, and I noticed weak tolerance building, but the only side effects I had were insomnia (while it was in effect) and mild headaches which went away with aspirin. The only reason I stopped taking it was that they revoked its approval in France, and none of the generics from other countries that I've found seem to work.

[jes5199]

I've tried adrafinil, too, and it has a side effect for me that makes me almost completely dysfunctional: I get really, really cranky and angry. The first time I tried it I couldn't resist trading insults with my boss - at this point, I don't dare take it if I'm going to be around other human beings at all.