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Effect of Duloxetine and Venlafaxine on the Pharmacokinetics and Pharmacodynamics of Oral Tramadol: A Three-phase Randomized Balanced Cross-over Study in Healthy Volunteers

NCT01443520 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2012-05-22

No results posted yet for this study

Summary

Tramadol is an opioid analgesic, which is widely used in the treatment of acute and neuropathic pain. After oral administration, tramadol is rapidly and almost completely absorbed. Tramadol is extensively metabolised by O- and N-demethylation, which are catalysed by the liver CYP-450 enzymes. O-desmethyltramadol is an active metabolite and its formation is catalysed by CYP2D6. This study is aimed to investigate the possible interaction of oral tramadol with duloxetine and venlafaxine. Duloxetine is known to inhibit CYP2D6. Twelve healthy male or female adult non-smoking volunteers aged 18-40 years with body weights within ±15% of the ideal weight for height are taken into the study. Primary endpoints of the study are plasma concentrations of tramadol and its metabolites.

Conditions

  • Healthy

Interventions

DRUG

Placebo

The subjects will be given orally placebo twice a day for 8 days prior to the study.

DRUG

Duloxetine

The subjects will be given orally duloxetine 30mg twice a day for 8 days prior to the study.

DRUG

Venlafaxine

The subjects will be given orally venlafaxine 37,5mg twice a day for 8 days prior to the study.

Sponsors & Collaborators

  • Turku University Hospital

    lead OTHER_GOV

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2011-10-31
Primary Completion
2012-01-31
Completion
2012-01-31

Countries

  • Finland

Study Locations

More Related Trials

Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01443520 on ClinicalTrials.gov