Flmodafinil is a synthetic derivative of Modafinil, a medication for sleep disorders such as narcolepsy, obstructive sleep apnea, and shift work sleep disorder. Like Modafinil, Flmodafinil is a wakefulness-promoting agent or eugeroic.

Flmodafinil is similar to Modafinil in its mechanism of action, increasing levels of the neurotransmitter dopamine in the brain, which helps to promote wakefulness and alertness. However, Flmodafinil is believed to be more potent than Modafinil and may have a longer half-life.