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What is Provigil?


Provigil® (modafinil) is a prescription medicine used to treat people who have narcolepsy, a condition that causes frequent and uncontrollable daytime sleepiness. Provigil® also reduces yawning and is indicated to improve wakefulness in people with other sleep disorders such as sleep apnea/hypopnea syndrome, and shift work sleep disorder.

Potential side effects

The most commonly reported side effects of Provigil® include headaches, nausea, nervousness, diarrhea, dry mouth, rhinitis, back pain, dizziness, and difficulty sleeping at night. Similar stimulant-type medications to Provigil® such as Ritalin® (methylphenidate) and Dexedrine® (dextroamphetamine) have been associated with dependence when taken without a physician's directions. While there are no reports of physical or psychological dependence with Provigil®, the risk of dependence isn't well studied. If you have high blood pressure, heart disease, liver disease, or kidney disease, you may need a lower dose of Provigil®. Contact your physician if you have any more questions about taking Provigil®.

Provigil® success rate

Medical research shows that Provigil® is effective in up to 74% of the people who take it for narcolepsy. Its effectiveness when compared to other drugs isn't known. The usual dose of Provigil® is 200 mg daily in the morning. It can be taken with or without food. It may take one to two months of treatment to see the drug's full effects.

Learn about narcolepsy with an In-Depth Report in our Health Encyclopedia.

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