A Pharmacokinetic Evaluation Study in Healthy Volunteers

Inclusion Criteria: * are nonsmokers or those subjects whom have not smoked within 6 months * are within 20% of their ideal body weight * are healthy on the basis of a pre-trial physical examination Exclusion Criteria: * history or suspicion of recent alcohol, barbiturate, amphetamine or narcotic abuse or a positive urine drug test at study screening * history of cardiac arrhythmias, bronchospastic or cardiovascular disease, diabetes mellitus, thyrotoxicosis, Parkinsonism, or drug allergy * use of concomitant medication other than hormonal contraceptives and multi-vitamins * donation of blood in the 60 days preceding the screening visit * have been diagnosed with HIV, hepatitis B or hepatitis C