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Provigil is used to promote wakefulness in those with narcolepsy, obstructive sleep apnea/hypopnea syndrome, and shift work sleep disorder. 

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Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.” .
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Very good – if you have adrenal exhaustion, need to address that at the same time, or you’ll have a rebound effect with the drug. Like, excessive fatigue the following day without the medication. I’ve been taking 200mg for about 2 years. It isn’t needed daily, but if you are going to pass out, there is nothing that provigil can do for you.
This I mean driving fatigue. I’ve crashed 2x when driving with provigil. If you are tired sleep, if you are sleepy pull over and nap. Its better that you don’t take chances.
I find the best use is brain fatigue. I am able to focus and study and organize my life better with it.
Definitely helps “waking up” in the morning.

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