The cumulative effects of modafinil are not well known though there is some evidence that it builds up neuron protection, modulates circadian rhythms and produces advantages for cognitive development. Personally I don't think these effects are so terrific that they outweigh the possible negative side effects which are also kind of hazy and unproven.

Dependency. Afinil is a great thing, and fairly benign but like anything else if you get used to it's effects you get tolerance and psychological (not physical) addiction.

I would say less extremes, I was often euphoric as an occasional user but also more short tempered according to my boyfriend. As a full time user it's more like a cleaner, more effective coffee habit, I have consistent energy don't crash in the afternoon but otherwise it's kinf of uneventful.

I love moda but can't imagine daily use it seems like it would lose it's effects and you would be back where you started.

Can you imagine daily caffeine use? Then you are 75% there. Now imagine skipping a day and think how you feel or picture having an extra cup or 2 for a busy day.

Now give this up cold or take one tomorrow thats daily use right there.