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Completed

NCT Number: NCT01303445

Drug-drug Interaction Study of Aggrenox and Omeprazole in Normal Volunteers

The objective of the current study is to investigate if a drug-drug interaction occurs with the administration of omeprazole 80 mg q.d. at steady state on the pharmacokinetics of dipyridamole and the pharmacodynamics of ASA-induced platelet aggregation inhibition (components of Aggrenox®) when administered every 12 hours at steady state.

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Key information

Conditions

Age range

18 year–50 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

9.197.001 Boehringer Ingelheim Investigational Site

Tempe, Arizona, United States

About this study

Purpose:

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Healthy males and females according to the following criteria:

Based upon a complete medical history, including the physical examination, vital signs (blood pressure(BP), pulse rate (PR)), 12-lead ECG, clinical laboratory tests

  • BMI >18.5 and BMI <32 kg/m2 (Body Mass Index)

Exclusion criteria

  • Any finding of the medical examination (including BP, PR and ECG) deviating from normal and of clinical relevance in the opinion of the PI
  • Any evidence of a clinically relevant concomitant disease
  • Clinically significant gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological, hormonal, or hematologic (including a history of abnormal bruising) disorders in the opinion of the PI
  • Surgery of the gastrointestinal tract that might impair drug absorption
  • Clinically significant diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
  • History of relevant orthostatic hypotension, fainting spells or blackouts.
  • Chronic or relevant acute infections
  • History of relevant allergy/hypersensitivity (including allergy to study drugs or its excipients, or reactions to related drugs [e.g., non-steroidal anti-inflammatory drugs])
  • Intake of drugs with a long half-life (¿24 hours) within one month, or less than 10 half lives of the respective drug, prior to study drug administration or during the trial
  • Use of drugs which might reasonably influence the results of the trial (including OTC antacids) based on the knowledge at the time of protocol preparation within 14 days prior to administration or during the trial
  • Participation in another trial with an investigational drug within two months prior to administration or during the trial
  • Tobacco use within the 90 days prior to check-in and throughout the study
  • Alcohol abuse within the past 2 years
  • Drug abuse within the past 2 years
  • Blood donation or other significant blood loss within 56 days (inclusive) prior to screening, or plasma donation within 7 days (inclusive) prior to study drug administration, or during the trial
  • Excessive physical activities (within one week prior to first drug administration or during the trial)
  • Any laboratory value outside the reference range that is of clinical relevance in the opinion of the PI; including positive virology, or urine drug screen, or positive fecal occult blood test
  • Inability to comply with dietary regimen of trial site
  • In the opinion of the investigator it would be in the best interest of the subject to be excluded from participation.

Treatment and study plan

Aggrenox alone

Drug

Aggrenox 1 capsule twice daily for 7 days

Aggrenox and omeprazole

Drug

Aggrenox 1 capsule twice daily and omeprazole 80mg once daily for 7 days

Omeprazole alone

Drug

omeprazole 80 once daily for 7 days

Primary outcomes

  1. Plasma Dipyridamole Maximum Concentration (Cmax)

    Time frame: 7 days

    Maximum measured concentration of dipyridamole in plasma

  2. Plasma Dipyridamole Area Under Plasma Concentration-time Curve From Zero to 12 Hours (AUC0-12)

    Time frame: 7 days

    Area under the concentration time curve of the analyte in plasma from 0 to 12 hours at steady state

  3. Inhibition of Platelet Aggregation at 4 Hours Post Dose (IPA4)

    Time frame: 7 days

    IPA4 equals the platelet aggregation measured 4 hours post dose divided by the platelet aggregation measured at baseline (multiplied by 100).

Secondary outcomes

  1. Plasma Dipyridamole Minimum Concentration (Cmin)

    Time frame: 7 days

    Minimum measured concentration of dipyridamole in plasma

  2. Inhibition of Platelet Aggregation at 12 Hours Post Dose (IPA12)

    Time frame: 7 days

    IPA12 equals the platelet aggregation measured 12 hours post dose divided by the platelet aggregation measured at baseline (multiplied by 100).

  3. Percentage Peak-to-trough Fluctuation (%PTF)

    Time frame: 7 days

    PTF = 100*((Cmax-Cmin)/Cavg) where Cavg=(AUC0-12)/12.

Sponsors and collaborators

Lead sponsor

Boehringer Ingelheim

Industry

Registry information

Official study title

Drug-drug Interaction Study of the Effect of Omeprazole 80 mg q.d. at Steady State on the Pharmacokinetics and Pharmacodynamics of Aggrenox® Every 12 Hours at Steady State in Healthy Male and Female Volunteers (an Open-label, Randomised, Crossover Study)

Important dates

Study start
2011
Primary completion
2011
First posted
Feb 24, 2011
Registry last updated
Dec 24, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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