Shift work sleep disorder can develop when changing or overnight work schedules disrupt normal sleep patterns. People may experience excessive sleepiness during working hours and difficulty sleeping at appropriate times. Waklert 150 mg contains armodafinil, which may be prescribed to promote wakefulness in certain cases. Armodafinil is also associated with managing daytime sleepiness related to narcolepsy and sleep apnea. Consistent sleep habits and professional guidance remain important parts of care.