Fasting Comparative Bioavailability of Two Tablet Formulations of Levodopa /Benserazide in Healthy Volunteers

University of Buenos Aires24 enrolled

Overview

A group of 24 healthy volunteers receive one tablet of an association of levodopa 200 mg and benserazide 50 mg corresponding to two drug products: a test formulation (Evoser ®; Phoenix S.A.I.C. y F., Buenos Aires, Argentina) and a reference formulation (Madopar ®; Roche Pharma, Switzerland) to assess their relative bioavailability. After administration of each formulation 17 blood samples are taken and levodopa is measured by HPLC. Pharmacokinetic parameters (AUC, Tmax and Cmax) are compared.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Masking

NONE

Enrollment

Conditions

Healthy Volunteers

Interventions

Levodopa + benserazideDRUG

Single oral dose of either Experimental or Active Comparator. Levodopa 200 mg/benserazide 50 mg tablets,with 200 mL of water.

Eligibility

Sex: ALLMin age: 21 YearsMax age: 50 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Healthy Caucasian Argentinean males and females volunteers aged 21 to 50 years with a body mass index from 19 to 27 kg/m2 were enrolled in this study. * All volunteers provided written informed consent prior to study initiation. Exclusion Criteria: * History of cardiovascular, hepatic, renal, psychiatric, neurologic, hematologic, or metabolic disease * Drug or alcohol abuse within 2 years before the start of the study * Smoking * HIV, hepatitis B, or hepatitis C infection * Consumption of any prescribed or over-the-counter drug within 2 weeks before the study or * Participation in a similar study within the past 6 months. Female subjects were not to be pregnant, planning to become pregnant, or breastfeeding at the time of the study, and were required to use an effective method of contraception (intrauterine device or hormonal method) throughout the study.

Outcomes

Primary Outcomes

Comparison of Area Under the Curve and Peak Concentration of plasma levodopa reached after two different drug products containing levodopa + benserazide

In order to comply with Argentine regulation for marketing approval this study includes 24 healthy volunteers to investigate whether the relative bioavailability of the test formulation met the regulatory criterion for the assumption of bioequivalence to the branded formulation. After dosing with each formulation, 17 blood samples are taken to measure plasma levodopa concentration by HPLC. With plasma concentration values, pharmacokinetic parameters are calculated and bioequivalence assessed with WinNonLin software.

Time frame: Blood samples are collected up to 6 hours after dosing. (day 1)

Secondary Outcomes

Number of Participants with Adverse Events as a Measure of Safety

Volunteers are asked about any discomfort or unusual manifestation they feel. Vital signs are recorded at each sampling time.

Time frame: Clinical evaluation are performed up to 6 hours after dosing. (day 1)

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.