Poor sleep quality might cause you to feel drowsy even after eight hours of sleep. Sleep disorders that hinder deep, restorative sleep include sleep apnea, restless legs syndrome, and frequent nightly awakenings. Another factor that might contribute to persistent fatigue includes stress, depression, anemia, hypothyroidism, and dehydration. Your body clock may be disturbed by irregular sleep patterns or by spending too much time on screens just before bed. Some drugs make you feel more sleepy. If severe daytime drowsiness persists even after getting enough sleep, a sleep condition like narcolepsy can be at play. Waklert 150 may be prescribed by doctors in specific diagnosed cases in order to increase wakefulness.