Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 50
- Neutral
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerResearch Summary
Analyzed using Evidence Intelligence™
Metformin improves glycemic control in heart failure patients
Last updated July 4, 2026
Key finding
Insulin sensitivity improved significantly with metformin treatment.
Metformin therapy in adults with heart failure and type 2 diabetes.
Quick read
Study at a glance
The essential study design details in one scan.
EvidenceScore™
Moderate
Study type
RCTs
Follow-up
Medium-Term (3–12 mo)
Risk of bias
Some Concerns
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Plain-language summary
What this paper says
A plain-language read of the study’s main message and where it applies.
Study focus
Metformin therapy in adults with heart failure and type 2 diabetes.
Clinical relevance
This study evaluated Metformin therapy in adults with heart failure and type 2 diabetes.
Keep in mind
Limitations were not clearly described in the extracted text.
Published in
Journal Reference
Publication details and source links for this paper.
Vojtěch M, Eva H, Kateřina V, et al. Metformin Improves Glycemic Control in Patients with Heart Failure and Type 2 Diabetes. Clinical Diabetes : A Publication of the American Diabetes Association. 2025;43(1):23-32. doi:10.2337/cd24-0003
Evidence network
How this study fits
Understand where this research contributes within the broader evidence network.
Evidence Context
This study contributes evidence to Metformin and Cardiac Function, Glucose iAUC (OGTT), HbA1c, and 2 more.
This study contributes evidence to
Primary intervention
Metformin
Primary outcomes
- Cardiac Function
- Glucose iAUC (OGTT)
- HbA1c
Evidence topics
Primary intervention
Primary outcomes
Evidence relationships
Intervention and outcome relationships this study adds to the evidence network.
5
Evidence pairs
5
Relationships
5
Evidence topics
contributes_evidence
Editorial context
Why this study matters
See why this paper is useful beyond its individual results.
Evidence network role
This section describes how the study fits into the current evidence network. It does not determine whether an intervention works on its own.
Moderate contributionModerate confidenceNetwork score: 72
5
Related topics
5
Evidence pairs
1355
Related studies
High relevance in at least one topic
Why it is useful
- Contributes to 5 evidence relationships
- Includes primary outcome data
- Linked to 5 direct semantic evidence topics
Topic contributions
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
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Primary evidence
Evidence relationship
Metformin Therapies and HbA1c
Related evidence
Evidence relationship
Metformin Therapies and Postprandial and OGTT Glucose
Save evidence
Evidence relationship
Metformin Therapies and Insulin Resistance
Save evidence
Core evidence
Study findings
The primary outcomes reported in this study.
Evidence Intelligence™
- EvidenceScore™
- 83
- Strong
- ImpactScore™
- 71
- Positive
- ConsistencyScore™
- 75
- consistent
Supporting studies: Based on 6 studies
Add to Evidence TrackerEvidence Intelligence™
- EvidenceScore™
- 85
- Strong
- ImpactScore™
- 86
- Very Positive
- ConsistencyScore™
- 70
- generally_consistent
Supporting studies: Based on 11 studies
Add to Evidence TrackerEvidence Intelligence™
- EvidenceScore™
- Moderate
- Score 69 · Based on 2 studies
- ImpactScore™
- 75
- Positive
- ConsistencyScore™
- 35
- mixed
Supporting studies: Based on 2 studies
Add to Evidence TrackerTrimethylamine N-oxide (TMAO)
Metformin → Trimethylamine N-oxide (TMAO)
Metformin → Trimethylamine N-oxide (TMAO)
Evidence Intelligence™
- EvidenceScore™
- Emerging
- Score 59 · Based on 1 study
- ImpactScore™
- 50
- Neutral
- ConsistencyScore™
- unclear
- Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence TrackerEvidence Library
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Connected Evidence
Explore related studies, evidence collections, and research questions.
Relationships organized using the Dediabetes Evidence Intelligence™ framework.
This study contributes to evidence on Metformin Therapies and HbA1c, Metformin Therapies and Postprandial and OGTT Glucose.
Related evidence relationships
Explore in Evidence ExplorerThis study contributes to the evidence on the following intervention-outcome relationships.
Medications
Metformin Therapies → HbA1c
Medications
Evidence Intelligence™
- EvidenceScore™
- 85
- Strong
- ImpactScore™
- 86
- Very Positive
- ConsistencyScore™
- 70
- generally_consistent
Supporting studies: Based on 11 studies
View evidenceMedications
Evidence Intelligence™
- EvidenceScore™
- 83
- Strong
- ImpactScore™
- 71
- Positive
- ConsistencyScore™
- 75
- consistent
Supporting studies: Based on 6 studies
View evidenceIncluded in these evidence collections
Curated evidence collections and hubs this study is part of.
HbA1c Evidence Hub
All studies measuring HbA1c
11 studies
outcome_hubMeasures HbA1c as a key outcome.
Metformin Therapies Evidence Hub
All studies on Metformin Therapies
11 studies
intervention_hubContributes to Metformin Therapies evidence base.
Postprandial and OGTT Glucose Evidence Hub
All studies measuring Postprandial and OGTT Glucose
6 studies
outcome_hubMeasures Postprandial and OGTT Glucose as a key outcome.
Recent Diabetes Research
Latest published studies
recency_collection
Published within the last 2 years.
Explore more in Evidence Explorer
Jump to pre-filtered views in Evidence Explorer.
All studies on Metformin and HbA1c
Intervention: MetforminOutcome: HbA1c
11 results
All studies on Metformin and Glucose iAUC (OGTT)
Intervention: MetforminOutcome: Glucose iAUC (OGTT)
6 results
All studies on Metformin
Intervention: Metformin
11 results
All studies measuring HbA1c
Outcome: HbA1c
11 results
All studies measuring Glucose iAUC (OGTT)
Outcome: Glucose iAUC (OGTT)
6 results
Questions answered by this study
Generated from the study's connected evidence using Evidence Intelligence™.
Does Metformin Therapies improve HbA1c?
Strong Evidence
Metformin Therapies appears to improve HbA1c.
ConsistencyScore™: Results are generally consistent across studies.
Ranked evidence signals
- 1
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 85.4 | strong positive | ConsistencyScore™ Generally Consistent | 1 study
Why this answer: This answer is based on 13 supporting studies with generally consistent results and a positive effect signal.
Limitations
- Population details are unavailable.
Does Metformin Therapies improve postprandial and ogtt glucose?
Strong Evidence
Metformin Therapies may improve Postprandial and OGTT Glucose.
ConsistencyScore™: Results are generally consistent across studies.
Ranked evidence signals
- 1
Glucose iAUC (OGTT)
EvidenceScore™ Strong | EvidenceScore™ 82.8 | moderate positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on 8 supporting studies with generally consistent results and a positive effect signal.
Limitations
- Population details are unavailable.
Does Metformin Therapies improve insulin resistance?
Strong Evidence
Metformin Therapies may improve Insulin Resistance.
ConsistencyScore™: Results are generally consistent across studies.
Ranked evidence signals
- 1
Insulin sensitivity
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | moderate positive | ConsistencyScore™ Mixed | 1 study
Why this answer: This answer is based on 7 supporting studies with generally consistent results and a positive effect signal.
Limitations
- Population details are unavailable.
Does Metformin improve cardiac function?
Emerging Evidence
Current evidence does not show a clear benefit of Metformin for Cardiac Function.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
- 1
Cardiac Function
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
- Only one supporting study is available.
- Consistency cannot yet be determined.
- Population details are unavailable.
Next steps
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Evidence topics
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