Modafinil(Provigil) is used to treat excessive sleepiness caused by narcolepsy (a condition that causes excessive daytime sleepiness) or shift work sleep disorder (sleepiness during scheduled waking hours and difficulty falling asleep or staying asleep during scheduled sleeping hours in people who work at night or on rotating shifts). Modafinil(Provigil) is also used along with breathing devices or other treatments to prevent excessive sleepiness caused by obstructive sleep apnea/hypopnea syndrome (OSAHS; a sleep disorder in which the patient briefly stops breathing or breathes shallowly many times during sleep and therefore doesn't get enough restful sleep). Modafinil is in a class of medications called central nervous system (CNS) stimulants. It works by changing the amounts of certain natural substances in the area of the brain that controls sleep and wakefulness.

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XCEED THE RECOMMENDED DOSE or take this medicine for longer than prescribed. Exceeding the recommended dose or taking this medicine for longer than prescribed may be habit-forming. AVOID ALCOHOL while you are using this medicine. USING THIS MEDICINE ALONE, WITH OTHER MEDICINES, OR WITH ALCOHOL may lessen your ability to drive or to perform other potentially dangerous tasks. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to this medicine. IF YOU EXPERIENCE difficulty breathing; tightness of chest; swelling of eyelids, face, or lips; or if you develop a rash or hives, tell your doctor immediately. Do not take any more doses of this medicine unless your doctor tells you to do so. BEFORE YOU BEGIN TAKING ANY NEW MEDICINE, either prescription or over-the-counter, check with your doctor or pharmacist. CAUTION IS ADVISED when using this medicine in children because they may be more sensitive to the effects of Provigil. FOR WOMEN TAKING BIRTH CONTROL PILLS, this medicine may decrease the effectiveness of your birth control pills. To prevent pregnancy, use an additional form of birth control while you are taking this medicine and for 1 month after stopping this medicine. FOR WOMEN: IF YOU PLAN ON BECOMING PREGNANT, discuss with your doctor.

SIDE EFFECTS that may occur while taking this medicine include nausea, nervousness, headache, dizziness, or trouble sleeping. If they continue or are bothersome, check with your doctor. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.

If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose include fast heartbeat, trouble sleeping, agitation, and restlessness.

If your symptoms do not improve or if they become worse, check with your doctor. DO NOT SHARE THIS MEDICINE with others for whom it was not prescribed. DO NOT USE THIS MEDICINE for other health conditions. KEEP THIS PRODUCT out of the reach of children. IF USING PROVIGIL FOR AN EXTENDED PERIOD OF TIME, obtain refills before your supply runs out.

You should skip the missed dose. Wait until the next time you are supposed to take Modafinil, and then take your normal dose. If you take Modafanil too late in your waking day, you may find it harder to go to sleep. Do not take a double dose to make up for a missed one.

Provigil is an anti-narcoleptic agent used to improve wakefulness in patients with narcolepsy (sudden uncontrollable attacks of daytime sleepiness), obstructive sleep apnea/hypopnea syndrome, or in patients with shift work sleep disorder. It may also be used to treat other conditions as determined by your doctor.

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Store Provigil in a safe place so that no one else can take it accidentally or on purpose. Keep track of how many tablets are left so you will know if any are missing.Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.

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XCEED THE RECOMMENDED DOSE or take this medicine for longer than prescribed. Exceeding the recommended dose or taking this medicine for longer than prescribed may be habit-forming. AVOID ALCOHOL while you are using this medicine. USING THIS MEDICINE ALONE, WITH OTHER MEDICINES, OR WITH ALCOHOL may lessen your ability to drive or to perform other potentially dangerous tasks. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to this medicine. IF YOU EXPERIENCE difficulty breathing; tightness of chest; swelling of eyelids, face, or lips; or if you develop a rash or hives, tell your doctor immediately. Do not take any more doses of this medicine unless your doctor tells you to do so. BEFORE YOU BEGIN TAKING ANY NEW MEDICINE, either prescription or over-the-counter, check with your doctor or pharmacist. CAUTION IS ADVISED when using this medicine in children because they may be more sensitive to the effects of this medicine. FOR WOMEN TAKING BIRTH CONTROL PILLS, this medicine may decrease the effectiveness of your birth control pills. To prevent pregnancy, use an additional form of birth control while you are taking this medicine and for 1 month after stopping this medicine. FOR WOMEN: IF YOU PLAN ON BECOMING PREGNANT, discuss with your doctor the benefits and risks of using this medicine during pregnancy. IT IS UNKNOWN IF THIS MEDICINE IS EXCRETED in breast milk. IF YOU ARE OR WILL BE BREAST-FEEDING while you are using this medicine, check with your doctor or pharmacist to discuss the risks to your baby.