Patients experiencing excessive sleepiness must observe precaution when taking Modafinil UK, an adult medicine to improve wakefulness. This oral medication is a controlled substance that needs a doctor’s prescription, taking into account the medical status of a patient who is often very sleepy.

Usually taken in the morning, the recommended Provigil dosage is once a day either without food or after a meal at about the 200 mg formulation.

A single dose of either 150 mg or 250 mg in the morning is given to patients with obstructive sleep apnea, a common disorder characterized by brief pauses in breathing during sleep, and narcolepsy, a neurological disorder that causes excessive sleepiness during daytime.

The recommended dose for patients with shift work sleep disorder is 150 mg once daily to be taken about an hour before they begin their work shift. This condition is experienced by individuals who usually move around different time zones, work at nights, or often subject to rotating work shifts, as their schedules affect the 24-hour internal body clock.

It should be noted that patients suffering from liver issues are usually administered only 100 mg once a day. Also, Provigil is not recommended for use to children below 17 years old. At any case, it is best to consult a physician before undergoing medication.