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An Interaction Study to Evaluate the Effect of Esomeprazole/Acetylsalicylic Acid on the Metabolism and Effect of Clopidogrel

An Open-label, Randomized, Single-center, 2-way Cross-over Interaction Study, Evaluating the Effect of Esomeprazole 20 mg/Acetylsalicylic Acid 81 mg on the Pharmacodynamics and the Pharmacokinetics of Clopidogrel on Days 1 and 9 in Healthy Volunteers

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01210339
Enrollment
58
Registered
2010-09-28
Start date
2010-11-30
Completion date
2011-08-31
Last updated
2011-10-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteers

Keywords

phase 1, cross-over, drug-drug Interaction, esomeprazole, acetylsalicylic acid, clopidogrel, healthy volunteers, cardiovascular disease, patients with acid associated gastrointestinal symptoms

Brief summary

The primary purpose of this study is to assess whether esomeprazole 20 mg/Acetyl Salicylic Acid (ASA) 81 mg affect the metabolism of clopidogrel.

Interventions

DRUGClopidogrel

Clopidogrel

DRUGEsomeprazole/ASA

20 mg/81 mg once daily for five days (Day 5-9)

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Male (aged between 18 and 45 years inclusive) or female (aged between 18 and 55 years inclusive) healthy volunteers * Female healthy volunteers must be of non-childbearing potential or be of childbearing potential, be non-lactating and have a negative pregnancy test during the pre-entry visit and be using 1 clinically accepted method of contraception * Have a body mass index between 19 and 30 kg/m2 inclusive * No clinically significant abnormal findings at the physical examination as judged by the investigator

Exclusion criteria

* Any clinically significant abnormalities in laboratory screening results as judged by investigator * Platelet count \<150 x 10\^9/L on Day -1 or any other conditions that would increase the risk of bleeding * Previous bone marrow transplant * Any clinically important abnormalities in rhythm, conduction or morphology of resting ECG

Design outcomes

Primary

MeasureTime frame
The effect of esomeprazole 20 mg/ acetylsalicylic acid 81 mg on the pharmacodynamics of clopidogrel by assessing maximal inhibition of platelet aggregation after 9 days of clopidogrel treatment relative to baselinePharmacodynamic sampling will be done before treatment period 1.

Secondary

MeasureTime frame
The effect of esomeprazole 20 mg/ acetylsalicylic acid 81 mg on the pharmacokinetics of the active metabolite of clopidogrel by assessing Area Under Curve (AUC) and Cmax.after 9 days of clopidogrel treatmentPharmacokinetic sampling will be done at the end of treatment period 1 and 2 (Day 9).
The safety and tolerability of clopidogrel alone and in combination with esomeprazole/ acetylsalicylic acidSafety will be monitored continuously. Adverse events will be collected from the first administration of Investigational Product (IP) throughout the study until the follow-up visit (on average) 7-10 days after last dose.

Countries

Sweden

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026