So I've had a chance to experiment with Nuvigil the past month and I love it! My doctor gave me a 30 tablet prescription at 150mg/tablet when I told him I wanted to give it a try to keep me awake when working late night hours. There are 50, 150, and 250mg tables and I would STRONGLY recommend to start with the lower dosages. My sweet spot is to split a 150mg tablet and take only half at night (75mg) when I need to focus for about 4-6 hours, and then optionally another half (75mg) later at night to extend my wakefulness if needed. It is a very clean mental rush which is much different than caffeine or anything such as CRAZE or Jack3d. The first time I took a dosage I made the mistake of taking 150mg at night which easily lasted for 10 hours, and gave me a headache the next day. Also, this drug is freakin' amazing as a pre-workout aid which will give you constant energy and focus. There is also the added benefit of the feel-good euphoria with the dopamine affects and very little side effects. I've also observed that you will gain tolerance very quickly so I'd definitely recommend taking it only for a few days straight, then take at least 1 or 2 days off. Also take note that the dosage of Nuvigil is equal to twice that of Provigil. I downloaded a coupon from the Nuvigil website to reduce my $5 copay to $0. As with any supplement, use with caution and don't abuse
With this particular supplement, I'm easily able to have laser sharp focus for many hours without the jitters or irregular heartbeat from traditional stims. One last thing...a positive side effect is my libido is insane on Nuvigil!