Effect of Omeprazole on Metformin

• Status: Completed
• Trial end date: 2012-12-01
• Target enrollment: 0
• Participant gender: Male

Summary

In this study, investigators hypothesized that the plasma concentration of metformin and its glucose-lowering action would be affected by omeprazole, probably by altering the expression or function of OCTs in the liver, its primary target organ, as well as in the kidney.

• Phase: Phase 1
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: Xijing Hospital
• Treatments: Metformin; Omeprazole

Criteria

Inclusion Criteria:

• age: 18 - 45 years

• sex: male

• body weight: 18 kg/m² to 26 kg/m²

• good health as evidenced by the results of the clinical examination, ECG, and the laboratory check-up, which are judged by the clinical investigator not to differ in a clinical relevant way from the normal state

• body weight: 18 kg/m² to 26 kg/m²

• written informed consent

Exclusion Criteria:

• existing cardiac or hematological diseases and/or pathological findings which might interfere with safety, pharmacodynamic effect and/or pharmacokinetics of metformin

• existing hepatic and renal diseases and/or pathological findings which might interfere with safety, pharmacodynamic effect and/or pharmacokinetics of metformin

• existing gastrointestinal diseases and/or pathological findings which might interfere with safety, pharmacodynamic effect and/or pharmacokinetics of metformin

• acute or chronic diseases which could affect drug absorption or metabolism

• history of any serious psychological disorder

• drug or alcohol dependence

• smokers of 10 or more cigarettes per day

• positive screening results for HIV, HBV and HCV

• volunteers who are on a diet which could affect the pharmacokinetics of the drug

• heavy tea or coffee drinkers (more than 1L per day)

• lactation and pregnancy test positive or not performed

• volunteers suspected or known not to follow instructions

• blood donation or other blood loss of more than 400 ml within the last 12 weeks prior to the start of the study

• participation in a clinical trial during the last 3 months prior to the start of the study

• less than 14 days after last acute disease

• intake of grapefruit containing food or beverages within 7 days prior to administration

• any systemically available medication within 4 weeks prior to the intended first administration unless, because of the terminal elimination half-life, complete elimination from the body can be assumed for the drug and/or its primary metabolites (except oral contraceptives)

• repeated use of drugs during the last 4 weeks prior to the intended first administration, which can influence hepatic biotransformation (e.g. barbiturates, cimetidine, phenytoin, rifampicin)

• repeated use of drugs during the last 2 weeks prior to the intended first administration which affect absorption (e.g. laxatives, metoclopramide, loperamide, antacids, H2-receptor antagonists)

• known allergic reactions to the active ingredients used or to constituents of the pharmaceutical preparation

• subjects with severe allergies or multiple drug allergies