Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 18 to 50 Women only

Comparing insulin treatment with or without metformin for gestational diabetes

Official title: Gestational Diabetes Treatment: Should We Continue Metformin When Starting Insulin? a Randomized Control Trial

Run by University of Virginia · NCT06781775 · Data updated 2026-11-12

This study is testing if pregnant women with gestational diabetes can benefit from continuing metformin along with insulin to see if it helps them and their babies stay healthier.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years to 50 Years
SexWomen only
Enrollment130 (estimated)
SponsorUniversity of Virginia
Academic / other
Locations1 site (Charlottesville, Virginia)
StatusRecruiting
StartedDecember 12, 2024
Main results expectedMay 1, 2026
Study endsMay 1, 2027
Registry record updatedJanuary 17, 2025
Trial IDNCT06781775 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are pregnant women diagnosed with gestational diabetes who require insulin therapy after starting metformin.

Probably not a fit

Patients with allergies to metformin or insulin, severe liver dysfunction, chronic kidney disease, or major fetal anomalies may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the effects of continuing metformin alongside insulin therapy in pregnant women diagnosed with gestational diabetes who require insulin for blood sugar control. Participants will be randomly assigned to either continue metformin or discontinue it when insulin is introduced. The study aims to determine if maintaining metformin can lower insulin dosage requirements and enhance both maternal and neonatal health outcomes. This research addresses a gap in current knowledge regarding the optimal management of gestational diabetes when both medications are needed.

Why it matters

Potential benefit: If successful, this study could lead to improved management strategies for gestational diabetes, potentially reducing insulin requirements and enhancing outcomes for mothers and their babies.

How similar studies have gone: This approach has not been extensively studied, making it a novel investigation in the management of gestational diabetes.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Provision of signed and dated informed consent form
2. Stated willingness to comply with all study procedures and availability for the duration of the study
3. Pregnant female meeting diagnosis for gestational diabetes requiring medical treatment
4. Ability to take oral medication and be willing to adhere to the metformin regimen
5. Willing to take insulin if needed
6. Willing to take blood sugars 4 times per day

   \-

   Exclusion Criteria:
   * 1\) Metformin allergy or known intolerance, known hypersensitivity to insulin 2) Severe hepatic dysfunction 3) Chronic kidney disease 4) Pregnancy with major fetal anomalies 5) Non-viable pregnancy

Where it's running

  • University of Virginia
    Charlottesville, Virginia, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.