Modvigil is a generic form of Modafinil (Provigil – in the USA). Each tablet contains exactly 200mg of Modafinil, manufactured by HAB Pharmaceuticals & Research Ltd. Modafinil is a eugenic drug or wakefulness-promoting agent. Prescribed for chronic fatigue syndrome, obstructive sleep apnea, shift work sleep disorder, ADHD and Narcolepsy.