Interaction Between St John's Wort and Metformin?

NCT ID: NCT01726764

Last Updated: 2014-12-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-01-31

Study Completion Date

2014-05-31

Brief Summary

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The goal of the study is to examine the difference of the pharmacokinetics of metformin with and without a 3 weeks pretreatment of St John's Wort. Furthermore secondary objectives include changes in GLP-1, C-peptide, serum-insulin and plasma-glucose during an oral glucose tolerance test, changes in OCT1 mRNA in plasma and changes in leptin and lipid-profile following this possible interaction.

Detailed Description

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Conditions

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Type 2 Diabetes Depression

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Blinding Strategy

NONE

Study Groups

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Metformin

7 days of pretreatment with metformin before full pharmacokinetics and other goals are investigated.

Minimum 1 week of washout after this period. 3 weeks of pretreatment with St John's Wort and the last 7 days metformin is ingested again, and the same effect parameters as described above is performed again

Group Type EXPERIMENTAL

St John's Wort

Intervention Type OTHER

Metformin

Intervention Type DRUG

Interventions

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St John's Wort

Intervention Type OTHER

Metformin

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Men aged 18-64 years
* Homozygous for common genetic variants in the genes organic cation transporter 1/2 (OCT1/OCT2)
* Normal values of biomarkers accounting for: Liver and kidney function, and normal blood glucose

Exclusion Criteria

* Chronic alcohol abuse
* Hypersensitivity to metformin or St John's Wort
* Daily intake of drugs requiring prescription
Minimum Eligible Age

18 Years

Maximum Eligible Age

64 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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University of Southern Denmark

OTHER

Sponsor Role lead

Responsible Party

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Tore B. Stage

M.Sc. Pharm

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Per Damkier, MD ph.d.

Role: PRINCIPAL_INVESTIGATOR

University of Southern Denmark

Tore B. Stage, M.Sc. Pharm

Role: PRINCIPAL_INVESTIGATOR

University of Southern Denmark

Kim Brøsen, Professor, MD

Role: STUDY_DIRECTOR

University of Southern Denmark

Locations

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Department of Clinical Pharmacology, Institute of Public Health, University of Southern Denmark

Odense, , Denmark

Site Status

Countries

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Denmark

Other Identifiers

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AKF-382

Identifier Type: -

Identifier Source: org_study_id