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Provigil 200 mg is the most commonly prescribed strength of modafinil, a wakefulness-promoting medication used to treat excessive daytime sleepiness. It is primarily prescribed for conditions such as narcolepsy, shift work sleep disorder, and obstructive sleep apnea when residual sleepiness persists despite standard treatment. The 200 mg dose is often considered the standard therapeutic dose for adults.

Provigil 200 mg works by influencing neurotransmitters in the brain that regulate alertness and cognitive function. Compared to traditional stimulants, it provides a more sustained and controlled increase in wakefulness, helping patients stay alert and focused throughout the day without intense stimulation or sudden crashes. Many users report improved concentration, mental clarity, and reduced fatigue.

This dosage is typically taken once daily, usually in the morning, or approximately one hour before a work shift for individuals with shift work sleep disorder. Taking Provigil later in the day may interfere with sleep, so timing is important. The medication should always be used exactly as prescribed by a healthcare professional.

Provigil 200 mg is generally well tolerated, but possible side effects may include headache, nausea, anxiety, or insomnia. While serious adverse effects are rare, patients should consult a doctor before starting treatment, especially if they have underlying heart conditions or are taking other medications. When used responsibly under medical supervision, Provigil 200 mg can be an effective option for managing excessive sleepiness and improving daily functioning.