<p class=”isSelectedEnd”>Modafinil 400mg is a prescription medicine used to promote wakefulness in adults with certain sleep-related disorders. Its established medical uses include narcolepsy, obstructive sleep apnea, and shift work sleep disorder. In narcolepsy, Modafinil may help reduce excessive daytime sleepiness and support wakefulness during normal daytime activities. For obstructive sleep apnea, it may be prescribed when significant daytime sleepiness continues despite appropriate treatment of the underlying breathing disorder. In shift work sleep disorder, Modafinil may help improve alertness during scheduled working hours when irregular or overnight shifts affect normal sleep patterns.</p>
The 400mg strength is relatively high and may not be suitable for every patient. The appropriate dose depends on the diagnosed condition, medical history, response to treatment, and other medicines being taken. Modafinil should be used only according to a healthcare professional’s instructions and should not replace adequate sleep. Possible side effects include headache, nausea, dizziness, nervousness, and insomnia. Patients should discuss their health conditions and current medicines with a healthcare professional before starting treatment.

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