Modalert 200 is part of the category of stimulants designed to boost the level of wakefulness in people who suffer from sleepiness due to the condition known as narcolepsy. It is a stimulant that increases the level of a substance called dopamine that is found in the brain through reducing release of dopamine into nerves. Dopamine is a neurotransmitter chemical which is utilized by nerves to send signals to communicate for purposes. It allows a person to remain awake throughout their work hours, or for carrying out routine activities and maintain a regular schedule of sleep. Directions for Use Use MODAFINIL in combination with, or with no food. In the event that MODAFINIL is taken along with food, it can be more difficult to work. If you're taking MODAFINIL to treat sleep problems during shifts problems, it is advised to take it 1 hour prior to the beginning of your shift. If you're taking MODAFINIL to treat Narcolepsy (excessive sleeping) as well as sleep apnea (lack of sleep due to breathing problems) make sure to take Modafinil online at the beginning of the day.