Modafinil helps enhance alertness, which is why it is indicated for sleep apnea, especially when significant daytime drowsiness is present. One of its main symptoms, daytime drowsiness, is reduced, but it doesn't address the underlying cause of sleep apnea, such as airway blockage. The disruption of sleep cycles caused by sleep apnea results in exhaustion and a decline in cognitive abilities. This can be controlled with Modalert 200mg modafinil, a wakefulness-promoting drug that increases attention and alertness. It's frequently used in conjunction with other sleep apnea therapies, such as continuous positive airway pressure (CPAP) therapy, to help patients who still feel sleepy throughout the day even after taking CPAP.