Buy Modvigil 200 is a drug that combats the daytime drowsiness caused by conditions including narcolepsy, shift work sleep disorder, and obstructive sleep apnea. The wakefulness-inducing drug modafinil has been demonstrated to shorten the time it takes to fall asleep at night and increase alertness throughout the day. It's recommended to take 200mg at a time, once a day. The effectiveness of modafinil in treating tiredness and excessive daytime drowsiness caused by neurological illnesses like multiple sclerosis has also been investigated. Patients with mild to severe obstructive sleep apnea who were not receiving traditional therapies showed significant improvement in their daytime drowsiness when given modafinil.