MODAFINIL is used to treat excessive sleepiness caused by certain sleep disorders. This includes narcolepsy, sleep apnea, and shift work sleep disorder. The lowest GoodRx price for the most common version of generic Provigil is around $34.00, 95% off the average retail price of $789.01. The Provigil cost of oral tablet 100 mg is around $1,171 for a supply of 30 tablets, depending on the pharmacy you visit. Prices are for cash paying customers only and are not valid with insurance plans. A generic version of Provigil is available, see modafinil prices. Modafinil was approved for medical use in the United States in 1998. In the United States it is classified as a schedule IV controlled substance due to concerns about addiction. In the United Kingdom it is a prescription only medication. It is available as a generic medication.