Modafresh 200mg contains 200mg of Modafinil, a medication used to improve wakefulness in adults who experience excessive sleepiness due to narcolepsy, obstructive sleep apnea, or shift work sleep disorder. Modafinil works by affecting certain substances in the brain that control sleep and wakefulness. It is important to follow the dosage instructions provided by a healthcare professional to ensure safe and effective use of this medication.