What do systematic reviews say?

Metformin‐sulphonylurea (second‐ or third‐generation) combination therapy vs metformin plus another antidiabetic drug

The review found no eligible studies for this question.

• Metformin and second‐ or third‐generation sulphonylurea combination therapy for adults with type 2 diabetes mellitus 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table for metformin plus intensive diet and exercise vs intensive diet and exercise

The review found no eligible studies for this question.

• Metformin for prevention or delay of type 2 diabetes mellitus and its associated complications in persons at increased… 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metformin vs sulphonylureas

The review found no eligible studies for this question.

• Metformin monotherapy for adults with type 2 diabetes mellitus 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metformin vs thiazolidinediones

The review found no eligible studies for this question.

• Metformin monotherapy for adults with type 2 diabetes mellitus 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metformin vs dipeptidyl‐peptidase 4 inhibitors

The review found no eligible studies for this question.

• Metformin monotherapy for adults with type 2 diabetes mellitus 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metformin vs glucagon like peptide‐1 analogues

The review found no eligible studies for this question.

• Metformin monotherapy for adults with type 2 diabetes mellitus 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metformin vs meglitinides

The review found no eligible studies for this question.

• Metformin monotherapy for adults with type 2 diabetes mellitus 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metformin vs megestrol

The review found no eligible studies for this question.

• Metformin for endometrial hyperplasia 2024 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Metformin + megestrol vs megestrol

The review found no eligible studies for this question.

• Metformin for endometrial hyperplasia 2024 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Metformin vs insulin

• Metformin monotherapy for adults with type 2 diabetes mellitus 2020 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 91 participants
  Very low

Metformin 500 mg to 2550 mg per day vs placebo

The review found no eligible studies for this question.

• Interventions for hirsutism (excluding laser and photoepilation therapy alone) 2015 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Flutamide 250 mg once to b.i.d. vs metformin 1275 mg to 1700 mg per day

The review found no eligible studies for this question.

• Interventions for hirsutism (excluding laser and photoepilation therapy alone) 2015 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found