Modafinil 400 mg is a drug prescribed for promoting wakefulness in patients with certain types of sleeping disorders. Currently approved indications for this medicine include narcolepsy, obstructive sleep apnea syndrome, and shift work sleep disorder. In case of narcolepsy, Modafinil may increase wakefulness and decrease excessive sleepiness. In case of obstructive sleep apnea, this medicine may be used when there is persistent daytime sleepiness after proper treatment of the breathing problem. In the case of shift work sleep disorder, this drug may increase wakefulness during planned work hours when they are influenced by irregular or night schedules.

The dosage of 400 mg is quite high and may not be recommended for everyone. This dose depends on several factors such as a diagnosed disorder, medical background, reaction to medication, other drugs that a person takes. It is necessary to use Modafinil strictly according to a doctor’s recommendations and not to substitute the lack of sleep with this medicine. Some side effects may include headache, nausea, dizziness, nervousness, and insomnia.

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