descriptionsModafinil is an oral drug that is used for improving wakefulness in patients with excessive sleepiness. The effect of modafinil is similar to caffeine. Both drugs promote wakefulness by stimulating the brain. Thus both drugs are considered stimulants. Other stimulants for example dextroamphetamine Dexedrine and sibutramine Meridia also have the different effect of suppressing appetite. All four of these drugs affect the neurotransmitters in the brain the chemicals that the nerves of the brain use to communicate with each other however they affect the neurotransmitters differently. Modafinil was approved by the FDA in December 1998.
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