Waklert 150mg usually lasts 10 to 12 hours after a single dosage. The drug is frequently used for disorders including narcolepsy, sleep apnea, and shift work sleep disorder because it enhances wakefulness, alertness, and cognitive performance. Depending on personal parameters like age, metabolism, and general health, the length may vary somewhat. The effects may persist somewhat longer or shorter for some people. Waklert works best when taken at the appropriate time of day, especially if your work schedule is unpredictable. For best results, always heed your doctor's advice on dose and time.