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Metformin

Metformin is a prescription medicine used for type 2 diabetes. Diabetes-prevention research and aging hypotheses must be distinguished from approved indications.

Also indexed as: Metformin hydrochloride · Glucophage

A clear starting point

Metformin helps reduce how much glucose the liver supplies and affects glucose handling. It is a medicine with important safety requirements, not simply a stronger version of a supplement.

Systems mapping shows biological relevance, not a treatment recommendation or a patient CPI score.

No validated chemical structure is displayed in this edition.

How it works

Hepatic glucose production / cellular energy sensing / intestinal effects

Metformin helps reduce how much glucose the liver supplies and affects glucose handling. It is a medicine with important safety requirements, not simply a stronger version of a supplement.

Targets & processes
Multiple hepatic and intestinal mechanisms; AMPK is not the sole explanation
Systems & tissues
Liver, intestine and glucose-regulating systems.

What does the evidence show?

Established type 2 diabetes glucose management. High-risk diabetes-prevention trials show benefit in defined populations; human longevity claims remain unproven.

What this does not establish

Prevention research is not a general anti-aging indication. Do not extrapolate to healthy people or substitute a supplement.

FDA prescribing information: GLUMETZA (metformin hydrochloride)

Official educational / regulatory source · Official educational / regulatory source

Indicated for type 2 diabetes; contraindications include severe renal impairment and metabolic acidosis. Lactic acidosis warning; B12 reduction and interacting drugs require consideration.

Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin.

The New England journal of medicine · 2002 · Clinical Trial; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. · PMID 11832527

Verified sample: 3,234 · Adults with elevated glucose at high risk of diabetes

Both groups had lower diabetes incidence; lifestyle intervention was more effective than metformin.

Limitations: High-risk population; not evidence of longer lifespan or an FDA prevention indication.

Citation metadata from PubMed, a service of the U.S. National Library of Medicine, NIH. A citation match is not a guarantee of study quality. Abstracts are not full-text reviews.

Safety is a separate question

Gastrointestinal adverse effects are common. Vitamin B12 reduction can occur. Rare but serious lactic acidosis is a key risk in susceptible situations.

Contraindications & cautions

Severe renal impairment and metabolic acidosis are contraindications; hypoxic illness, hepatic impairment and some procedures change risk.

Medication & supplement interactions

Alcohol, iodinated contrast and medicines affecting renal function or metformin transport can change risk. Management is clinician-directed.

Regulatory status · United States

United States: prescription metformin products are approved for type 2 diabetes, product-label specific. Diabetes prevention and longevity are not approved indications in the cited label.

Read the official source

This is not an exhaustive safety list. Regulatory status varies by jurisdiction and product; investigational use is not approval.

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All medications and therapies discussed are for educational purposes only. Prescriptions are determined independently by the licensed clinician following a medical evaluation. There is no guarantee that any medication or peptide will be prescribed.
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Education only. Confidence labels are not formal systematic evidence grades. No patient record is used.

Education, not a prescription. Research summaries are not medical advice, dosing instructions, or an offer to sell. Mechanistic findings do not establish clinical effectiveness. US regulatory status is product- and indication-specific and may change. Discuss health decisions with a licensed clinician.