Modafinil 200 mg is a higher dose of Provigil. This Modafinil dose is mostly used when a patient is out of control, or a little bit more serious than the normal condition. Doctors prescribe this medicine for the treatment of narcolepsy, obstructive sleep apnea, and shift work sleep disorder. The medicine dose is different and depends on the patient’s condition, age, and sleeping disorder types. So consult your doctor before taking the Modafinil, and for the using direction of Modafinil.