Modalert 200 mg belongs to a group of medicines known as psychostimulants. It works in the central nervous system of the brain and promote wakefulness and mental alertness to users. It is used in the treatment of excessive daytime sleepiness associated with various sleep disorders such as insomnia, shift-work sleep disorder and obstructive sleep apnea. For more information, visit here: https://healthnaturo.com/product/Modalert200mg/