Alprazolam Extended-Release 3mg Tablets Bioequivalence Study Under Fasting Conditions

Inclusion Criteria: * Screening Demographics: All subjects selected for this study will be healthy non-smoking men and women 18 years of age or older at the time of dosing. The subject's body mass index (BMI) should be less than or equal to 30. * Screening procedures: Each subject will complete the screening process within 28 days prior to Period I dosing. * Consent documents for both the screening evaluation and HIV antibody determination will be reviewed, discussed, and signed by each potential participant before full implementation of screening procedures. * Screening will include general observations, physical examination, demographics, medical and medication history, an electrocardiogram, sitting blood pressure and heart rate, respiratory rate and temperature. * The physical examination will include, but may not be limited to an evaluation of the cardiovascular, gastrointestinal, respiratory, and central nervous systems. * The screening clinical laboratory procedures will include: * Hematology: hematocrit, hemoglobin, WBC count with differential, RBC count, platelet count; * Clinical Chemistry: serum creatinine, BUN, glucose, AST(GOT), ALT(GPT), albumin, total bilirubin, total protein, and alkaline phosphatase; * HIV antibody, hepatitis B surface antigen, hepatitis C antibody screens; * Urinalysis: by dipstick; full microscopic examination if dipstick positive; and * Urine Drug Screen: ethyl alcohol, amphetamines, barbiturates, benzodiazepines, cannabinoids, cocaine metabolites, opiates, and phencyclidine. * Serum Pregnancy Screen (female subjects only) * FSH (to verify postmenopausal status; female subjects only) * If female and: * is postmenopausal for at least 1 year and has a serum FSH level ≥ 20mIU/mL; or * is surgically sterile (bilateral tubal ligation, bilateral oophorectomy, or hysterectomy). Exclusion Criteria: * Subjects with a recent history of dug or alcohol addiction or abuse. * subjects with the presence of a clinically significant disorder involving the cardiovascular, respiratory, renal, gastrointestinal, immunologic, hematologic, endocrine, or neurologic system(s) or psychiatric disease (as determined by the clinical investigators). * Subjects whose clinical laboratory test values are outside the accepted reference range and when confirmed on re-examination are deemed to be clinically significant. * Subjects demonstrating a reactive screen for hepatitis B surface antigen, hepatitis C antibody or HIV antibody. * Subjects demonstrating positive drug abuse screen when screened for this study. * Female subjects demonstrating a positive pregnancy screen. * Female subjects who are currently breast-feeding. * Subjects with a history of allergic response(s) to alprazolam or related drugs. * Subjects with a history of clinically significant allergies including drug allergies. * Subjects with a clinically significant illness during the 4 weeks prior to Period I dosing (as determined by the clinical investigators). * Subjects who currently use or report using tobacco products within 90 days of Period I dose administration. * Subjects who have taken any drug known to induce or inhibit hepatic drug metabolism in the 28 days prior to Period I dosing. * Subjects who report donating greater than 150 mL of blood within 30 days prior to Period I dosing. All subjects will be advised not to donate plasma for four weeks after completing the study. * Subjects who report receiving any investigational drug within 28 days prior to Period I dosing. * Subjects who report taking any systemic prescription medication in the 14 days prior to Period I dosing. * Subjects who report an intolerance of direct venipuncture. * Subjects who report consuming an abnormal diet during the 28 days prior to Period I dosing.