Inclusion Criteria:

• male or female
• at least 18 years of age
• weight must be 15% of ideal weight for height and frame
• subjects must be in good health and physical condition as determined by medical history, complete physical examination, and laboratory tests, all within four (4) weeks prior to study start. The subject may not have a history of significant past illness expected to affect the investigation
• subjects must read and sign consent form

Exclusion Criteria:

• history of treatment for alcoholism, substance abuse, or drug abuse within past 24 months
• history of malignancy, stroke, diabetes, cardiac, renal or liver disease
• history of GERD, malabsorption syndrome, colon cancer, or chronic colitis, including Crohn's disease
• history of treatment for asthma within the past five (5) years
• history of mental depression, pulmonary disease, sleep apnea
• females who are pregnant or lactating
• history of hypersensitivity to zolpidem tartrate, or any hypnotic or sedative
• conditions upon screening which might contraindicate or require that caution be used in the administration of zolpidem tartrate, including sitting systolic blood pressure below 90 mm Hg, or diastolic pressure below 50 mm Hg; heart rate less than 50 beats per minute after a 5-minute rest in a seated position
• inability to read and/or sign the consent form
• treatment with any other investigation drug during the four (4) weeks prior to the initial dosing for this study
• subjects who have donated blood within four (4) weeks prior to the initial dosing for this study
• subjects who smoke or use tobacco products or are currently using nicotine products (patches, gums, etc.) Three (3) months abstinence is required.