Modalert 200 is occasionally used off-label by people looking to increase their attention or cognitive function. The main reasons why modafinil is prescribed are for sleep problems such shift work disorder, narcolepsy, and sleep apnea. It may improve alertness and focus, which some individuals find useful for studying, and it works by encouraging wakefulness. The effects on healthy people without sleep difficulties, however, are not entirely known, and using it over-the-counter has certain dangers, such as the possibility of adverse effects including headaches, anxiety, and cardiovascular problems. Before using Modalert for studying or cognitive improvement, it's crucial to speak with a healthcare provider.