You will notice a difference the first time you take Nuvigil and it will last approximately 8 to 12 hours. It takes several months to obtain the maximum benefit on this medication. When I first started taking Nuvigil, it kept me awake well into the night. I now take it first thing in the morning on an empty stomach and it last until around dinner time, then I begin to feel sleepy again.
Hope this helps,
- Nuvigil Information for Consumers
- Nuvigil Information for Healthcare Professionals (includes dosage details)
- Side Effects of Nuvigil (detailed)
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