Disclaimer: It's been about two years since I looked at the literature for this, and I'm writing this completely from memory. If you think I've made a mistake or have a question, let me know, and I'll do my best to respond to it.
WHAT IS IT?
As was mentioned above, modafinil is a relatively new drug that alleviates the effects of sleep deprivation. The thing that differentiates this drug from caffine or amphetamines is that it tends not to make the user feel wired, and doesn't appear to result in an accumulation of sleep debt. Sleep debt, in case you were wondering, is basically the effect that when you loose sleep, you're forced to pay it back at some point in the future. Modafinil seems to remove this need, while other drugs do not.
SIDE EFFECTS
As a general rule, using modafinil occasionally shouldn't be a problem for the short term. Somewhere around 10% of people get strange side effects, such as nausea, heart trouble, or severe anxiety. There's also a bit of concern over temperature regulation as modafinil seems to slightly increase temperature. I've looked at some of the studies that address this issue, and I think they're crap, since they didn't take into account the fact that it's normal to have a decrease in body temperature during sleep deprivation. As a result, it's not clear to me whether modafinil is actually increasing body temperature or if it is preventing the normal decrease in body temperature that occurs during sleep deprivation.
However, no one has any idea what using this drug for long periods of time would do to someone. The best long-term study I've seen was on nacroleptics who had been using modafinil for three years without any serious problems. However, their situation is obviously different from that of someone who would be taking it to avoid sleep entirely. |