Closing
Does metformin improve blood pressure more than other treatments?
Mostly studied in type 2 & unspecified diabetes. Also asked versus placebo.
Not modeled yetTrial evidence exists, but no mechanistic model yetWithout a model there is no decisive experiment to propose. Help build it. →
Where the evidence stands
A coin flip. So far, one result, not yet repeated.
NoUnsureYes
- Belief
- 0.50 (range 0.25–0.70)
- Trials for
- 1
- Trials against
- 0
- Inconclusive
- 1
Already under way
- Efficacy and Safety of Henagliflozin, Retagliptin, and Metformin Extended-Release Tablets in Chinese Patients With Type 2 Diabetes MellitusNCT07441187 · not yet recruiting · started 2026
- Efficacy of Metformin With Antidepressant Medication as Adjunct Therapy in Depression-obesity Ccomorbidity and Ssociation With NEGR1/RPL31P12 Variants Based on…NCT07654179 · recruiting · started 2026
- Study on the Effect of Metformin in Improving Cardiac Function After Implantation of Left Ventricular Assist DevicesNCT07666698 · not yet recruiting · started 2026
- Effects of GLP-1 Receptor Agonists Combined with Metformin and Healthy Lifestyle Education Prior to Fertility Treatment on Reproductive Outcomes in Women with…NCT06775093 · not yet recruiting · started 2025
- Open-label, Double-arm, Controlled, Randomized, Multicentre Clinical Trial to Evaluate the Impact of Pharmacogenetic-guided Treatment in Patients With…NCT06851962 · active not recruiting · started 2025
The evidence so far
- Registered trials
- 184
- With posted results
- 65
- Published papers
- 13
Of 9 decided analyses: 2 favor metformin, 5 find no difference, 2 favor the comparator.
Papers
- Metformin may adversely affect orthostatic blood pressure recovery in patients with type 2 diabetes: substudy from the placebo-controlled Copenhagen Insulin and Metformin Therapy (CIMT) trial.Trial report · 2020
- Metformin reduces arterial stiffness and improves endothelial function in young women with polycystic ovary syndrome: a randomized, placebo-controlled, crossover trial.Trial report · 2010
- Does metformin decrease blood pressure in patients with Type 2 diabetes intensively treated with insulin?Trial report · 2005
- Bexagliflozin as an adjunct to metformin for the treatment of type 2 diabetes in adults: A 24-week, randomized, double-blind, placebo-controlled trial.Trial report · 2023
- Effects of metformin on blood pressure in nondiabetic patients: a meta-analysis of randomized controlled trials.Meta-analysis / systematic review · 2017
- Metformin use and preeclampsia risk in women with diabetes: a two-country cohort analysis.Meta-analysis / systematic review · 2024
Trials
- A Randomised Placebo Controlled Trial of the Effectiveness of Early MEtformin in Addition to Usual Care in the Reduction of Gestational Diabetes Mellitus Effects (EMERGE)NCT02980276 · 2 posted results
- Safety and Efficacy of Exenatide Once Weekly Injection Versus Metformin, Dipeptidyl Peptidase-4 Inhibitor, or Thiazolidinedione as Monotherapy in Drug-Naive Patients With Type 2 DiabetesNCT00676338 · 6 posted results
- Effectiveness of the Treatment With Dapagliflozin and Metformin Compared to Metformin Monotherapy for Weight Loss on Diabetic and Prediabetic Patients With Obesity Class IIINCT03968224 · 1 posted result
- A Randomized Phase 3 Trial of Metformin in Patients Initiating Androgen Deprivation Therapy as Prevention and Intervention of Metabolic Syndrome: The Prime StudyNCT03031821
- Studies to Treat Or Prevent Pediatric Type 2 Diabetes (STOPP-T2D) Treatment Options for Type 2 Diabetes in Adolescents and Youth (TODAY) Clinical TrialNCT00081328 · 1 posted result
- A Randomized Trial of Metformin as Adjunct Therapy for Overweight Adolescents With Type 1 DiabetesNCT01881828 · 1 posted result
- Effectiveness of the Combination Liraglutide and Metformin on Weight Loss, Metabolic - Endocrine Parameters and Pregnancy Rate in Women With Polycystic Ovarian Syndrome, Obesity and InfertilityNCT05952882
- Effectiveness Study of a Lifestyle Intervention Versus Metformin in Mothers With Recent Gestational DiabetesNCT06948825