The purpose of this study is to evaluate and compare the relative bioavailability and therefore the bioequivalence of a test formulation of lovastatin tablets to an equivalent dose of Mevacor® tablets after a single oral dose administered under fasting conditions.

The purpose of this study is to evaluate and compare the relative bioavailability and therefore the bioequivalence of a test formulation of lovastatin tablets to an equivalent dose of Mevacor® tablets after a single oral dose administered under fasting conditions.

Fifty-four healthy, light/non/or ex-smoking, non-obese, male volunteers at least 18 years of age will be randomly assigned in a crossover fashion to receive each of two lovastatin dosing regimens in sequence with a 7 day washout period between dosing periods. On the morning of Day 1, after an overnight fast of at least 10 hours, subjects will receive either a single oral dose of the test formulation, lovastatin (1 x 40 mg tablet), or a single oral dose of the reference formulation, Mevacor® (1 x 40 mg tablet). After a 7 day washout period on the morning of Day 8, following an overnight fast of at least 10 hours, subjects will receive the alternate regimen. Blood samples will be drawn from all participants before dosing and for 24 hours post-dose on a confined basis at times sufficient to adequately define the pharmacokinetics of lovastatin. Blood sampling will then continue on a non-confined basis at 36 and 48 hours post-dose. A further goal of this study is to evaluate the safety and tolerability of this regimen in healthy volunteers. Subjects will be monitored throughout the confinement portion of the study for adverse reactions to the study drug and/or procedures. Vital signs will be monitored if judged necessary by the physician in charge. All adverse events whether elicited by query, spontaneously reported, or observed by clinic staff will be evaluated by the Investigator and reported in the subject's case report form.

Inclusion Criteria:

• Availability of volunteer for the entire study period and willingness to adhere to protocol requirements as evidenced by the informed consent form (ICF) duly signed by the volunteer
• Male aged of at least 18 with a body mass index (BMI) greater than or equal to 19 and below 30 kg/m²
• Clinical laboratory values within the laboratory's stated normal range; if not within this range, they must be without any clinical significance
• Healthy according to the laboratory results and physical examination
• Light, non- or ex-smokers. Light smokers are defined as someone smoking 10 cigarettes or less per day, and ex-smokers are defined as someone who completely stopped smoking for at least 3 months
• The informed consent form must be signed by all volunteers, prior to their participation in the study

Exclusion Criteria:

• Significant history of hypersensitivity to lovastatin or any related products as well as severe hypersensitivity reactions (like angioedema) to any drugs
• Presence of significant gastrointestinal, liver or kidney disease, or any other conditions known to interfere with the absorption, distribution, metabolism or excretion of drugs or known to potentiate or predispose to undesired effects
• History of significant gastrointestinal, liver or kidney disease, or surgery that may affect drug bioavailability, including but not limited to cholecystectomy
• Presence of significant cardiovascular, pulmonary, hematologic, neurologic, psychiatric, endocrine, immunologic or dermatologic disease
• Presence of active liver disease or unexplained persistent elevations of serum transaminases
• Maintenance therapy with any drug, or significant history of drug dependency or alcohol abuse (>3 units of alcohol per day, intake of excessive alcohol, acute or chronic)
• Any clinically significant illness in the previous 28 days before day 1 of this study
• Use of enzyme-modifying drugs in the previous 28 days before day 1 of this study (all barbiturates, corticosteroids, phenylhydantoins, etc.)
• Participation in another clinical trial in the previous 28 days before day 1 of this study
• Donation of 500 mL or more of blood (Canadian Blood Services, Hema-Quebec, clinical studies, etc.) in the previous 56 days before day 1 of this study
• Positive urine screening of drugs of abuse
• Positive results to HIV, HBsAg or anti-HCV tests

54 subjects were enrolled in this study. Several subjects dropped out of the study prior to receiving both interventions. 53 subjects were administered lovastatin 40 mg tablest and 52 subjects were administered Mevacor® 40 mg tablets.