The FDA-approved medication to treat sleep disturbances is called Modalert (modafinil). Waklert (Armodafinil), a variant of Modafinil, is used for the same purposes but has slightly different qualities. The extent of a person's concerns and ability to adjust to a drug determines the efficacy of both medications. Both modafinil and armodafinil are available for purchase online at reasonable prices and can be used safely.