Provigil is an FDA-approved medicine that is mainly used for narcolepsy. It will make your sleep routine perfect and give you a healthy lifestyle. Provigil can taken by adults only(i.e. 17 years or older). You can take 200mg once a day in the morning. If more doses are needed then the doctor advised to increase. Those who have kidney diseases, heart diseases pregnant ladies, or those trying to get pregnant do not take the medication.