Waklert 150 treats daytime drowsiness caused by narcolepsy, obstructive sleep apnea, and shift work sleep disorder, however it does not cure the primary cause. Sleep apnea causes shallow or silenced breathing during sleep, lowering blood oxygen levels and disrupting sleep patterns. Sleep apnea untreated raises the risk of hypertension, heart disease, and stroke. It may cause daytime weariness, cognitive impairment, and accidents due to drowsiness. Thus, anyone with sleep apnea symptoms including loud snoring, gasping or choking, and daytime lethargy should contact a doctor. Sleep apnea is treated with lifestyle modifications, CPAP treatment, dental appliances, surgery, or other methods to open the airway during sleep.