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Anti-diabetic agent

Metformin for Prediabetes

Phase 2
Waitlist Available
Led By Diana I Jalal, MD
Research Sponsored by Diana Jalal
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Age 18-55 years
Be between 18 and 65 years old
Must not have
History of diabetes, myocardial infarction, heart failure, liver disease, or chronic kidney disease (estimated glomerular filtration rate < 45 ml/min/1.73m2)
Current use of medicated contraindicated for use with metformin
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 12 weeks

Summary

This trial aims to see if metformin can improve blood vessel function in people with prediabetes. Participants will take metformin or a placebo for 12 weeks and researchers will compare the effects

Who is the study for?
This trial is for individuals with prediabetes, a condition where blood sugar levels are higher than normal but not high enough to be type 2 diabetes. Participants should not have started any new cardiovascular or glucose-lowering medications within the last three months.
What is being tested?
The study tests if metformin, a common diabetes medication, can improve blood vessel function in people with prediabetes. It compares the effects of metformin against a placebo over 12 weeks, with doses increasing after the first two weeks.
What are the potential side effects?
Possible side effects of metformin include digestive issues like nausea and diarrhea, potential vitamin B12 deficiency with long-term use, and very rarely, an increased risk of lactic acidosis.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I am between 18 and 55 years old.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I have a history of diabetes, heart issues, liver disease, or severe kidney disease.
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I am not taking any medications that can't be used with metformin.
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I have taken metformin in the last year.
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My BMI is over 40.
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I have not had a severe infection in the last 30 days.
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I am currently smoking or quit less than 6 months ago.
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I have had lactic acidosis in the past.
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I have not taken immunosuppressive drugs in the last year.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~12 weeks
This trial's timeline: 3 weeks for screening, Varies for treatment, and 12 weeks for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Macrovascular endothelial function
Secondary study objectives
Microvascular endothelial function

Side effects data

From 2015 Phase 4 trial • 156 Patients • NCT02002221
13%
Nasopharyngitis
10%
Hyperhidrosis
9%
Hunger
9%
Tremor
8%
Asthenia
6%
Hypoglycaemia
1%
Femoral neck fracture
1%
Squamous cell carcinoma of the tongue
100%
80%
60%
40%
20%
0%
Study treatment Arm
Vildagliptin (LAF237)
Placebo

Trial Design

2Treatment groups
Experimental Treatment
Placebo Group
Group I: MetforminExperimental Treatment1 Intervention
Participants will receive metformin 850 mg PO once a day for 2 weeks. After 2 weeks, participants will receive metformin 1700 mg PO once a day for the remaining 10 weeks.
Group II: PlaceboPlacebo Group1 Intervention
Patients will receive placebo pill identical in appearance and taste to the supplement
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Metformin
2006
Completed Phase 4
~2430

Find a Location

Who is running the clinical trial?

Diana JalalLead Sponsor
2 Previous Clinical Trials
119 Total Patients Enrolled
Diana I Jalal, MDPrincipal InvestigatorUniversity of Iowa
~20 spots leftby Oct 2026