Yes, Modalert 200 mg contains the active ingredient modafinil, which affects the brain. It works primarily by altering neurotransmitters (chemical messengers in the brain) such as dopamine, norepinephrine, and serotonin, which are involved in regulating attention, mood, and cognitive function. By increasing levels of these neurotransmitters, Modalert promotes wakefulness and reduces excessive daytime sleepiness. This is especially beneficial for people with sleep disorders such as narcolepsy, sleep apnea, and shift work sleep disorder. In addition, Modalert 200mg may improve certain cognitive functions, such as attention, memory, and executive function, especially in sleep-deprived people. Although Modalert has these effects on the brain, it should be used under medical supervision due to the risk of side effects and addiction.