Inclusion Criteria:
Patients must satisfy all of the following inclusion criteria to be included in the study:
- be male or female between the ages of18 and 65 years, inclusive;
- have a current diagnosis of type 2 DM, which is currently managed with oral hypoglycemic agents for at least 3 months;
- have a current physical examination that reveals no clinically significant abnormalities;
- have no clinically significant abnormalities in vital signs;
- have a body mass index (BMI) <38;
- have a glycosylated hemoglobin (HbA1c) > 8 and <12;
- have a C-peptide level >3 ng/mL;
- have a typical fasting blood glucose levels of < 200 mg/dl (+/- 25 mg/dl);
- be available for the entire study period, and be able and willing to adhere to protocol requirements;
- if female of childbearing potential, must be using a reliable form of birth control; and,
- provide written informed consent prior to admission into the study.
Exclusion Criteria:
- have a history or presence of significant cardiac, gastrointestinal, endocrine, neurological, liver, or kidney disease, or conditions known to interfere with the absorption, distribution, metabolism, or excretion of insulin;
- have a history of drug or alcohol dependency or psychological disease;
- have any clinically significant illness during the 4 weeks prior to admission into the study;
- require regular use of medication that interferes with the absorption and/or metabolism of insulin;
- recent use (within 48 hours) of medications that interfere with blood glucose analyses, i.e., mannose, acetaminophen, dopamine, and ascorbic acid, which are all reported to alter glucose-oxidase type blood glucose analytical methods;
- use of Avandia or Actos for treating diabetes;
- participation in a clinical trial or use of an investigational drug within 30 days prior to admission to this study;
- use of MAO inhibitors or enzyme-inducing or enzyme-inhibiting agents (eg, phenobarbital or carbamazepine) within 30 days prior to admission to this study;
- are pregnant or lactating; 10. have an episode of severe hypoglycemia with seizure or coma within the past year;
11. have a history of ketoacidosis;
12. have any acute illness within 2 weeks prior to Screening; or,
13. have elevated liver enzymes (ALT, AST, alkaline phosphatase) >1.5 times the upper limit of normal.