Modalert 200mg is a prescription medication that enhance brain performance and treat excessive daytime sleepiness. Daytime sleepiness can be caused by sleep disorders like narcolepsy, obstructive sleep apnea, shift-work sleep disorder, and insomnia. Dosage of Modalert 200mg work against those sleep disorders and promote wakefulness and alertness in users. It also helps to enhance users brain activity by alleviating certain neurotransmitter in the brain. To learn more about Modalert 200mg, visit the website HealthMatter.