Modafinil is used to treat symptoms of excessive sleepiness caused by such conditions as sleep apnea, narcolepsy, or shift work sleep disorder. It is also prescribed for all forms of excessive daytime sleepiness where causes can't be identified.
Improving wakefulness in patients with excessive sleepiness associated with narcolepsy or other sleep disorders. It may also be used for other conditions as determined by your doctor.
Modafinil is a wakefulness-promoting agent. Exactly how it works is not known, but it is thought to work by altering the natural chemicals (neurotransmitters) in the brain.
Follow your doctor's directions, never take less or more than precribed. Do not take this medication for longer than prescribed. Modafinil is usually given for 12 weeks or less. The usual prescribed dosage for these disorders is 200 mg once a day. For conditions other than shift work sleep disorder, modafinil is normally taken in one dose in the morning or in two doses in the morning and at midday. It is not recommended to take modafinil after noon: taking it during the later part of the day may cause insomnia at night.
This medication may cause severe adverse effects, including severe dermatologic reactions, serious and potentially fatal conditions such as Toxic epidermal necrolysis, DRESS syndrome (Drug Reaction (or Rash) with Eosinophilia and Systemic Symptoms), and Stevens-Johnson Syndrome. The symptoms of these diseases may include fever, sore throat, headache, and vomiting with a severe blistering, peeling, and red skin rash. Modafinil may also have a contraceptive effect which lasts for a month after cessation of dosage. Always consult with a specialist before taking any medication.
Do not use this medication if you are allergic to modafinil or armodafinil (Nuvigil). Tell your doctor if you have chest pains, liver or kidney disorders, any heart diseases, a history of drug addiction, if you take blood pressure medication, or if you have recently had a heart attack. This medication impairs thinking or reactions. If you have to do something which reuires being alert, be careful to avoid dangerous accidents.