Study Procedures: Once potential study participants have undergone an initial screen to insure basic eligibility they will provide informed consent and will undergo a 2-hour baseline assessment that will include completing a diagnostic interview, paper-and-pencil packet of measures, and providing urine and blood specimens. After completion of these assessments, a final determination will be made within three business days as to whether the potential participant meets inclusion but not exclusion criteria. Eligible participants will then be randomized to one of the two treatment groups. The participants will be prompted three times each day by text messaging pages reminding them to take their study medications.