 However, the Cmax of armodafinil at steady state was 37% higher following administration of 200 mg Nuvigil than the corresponding value of modafinil following administration of 200 mg Provigil due to the more rapid clearance of the ("S")-(+)-enantiomer.Armodafinil is readily absorbed after oral administration.The absolute oral bioavailability was not determined due to the aqueous insolubility of armodafinil, which precluded intravenous administration.