Metformin Reference

Plain English

What it is

Metformin (sold as the brand Glucophage) is a prescription pill. The FDA approved it to help control blood sugar in people with type 2 diabetes, and it has long been a common first choice for that condition.

What people use it for

Its approved job is treating type 2 diabetes. People interested in longevity (living longer and healthier) also ask about it for anti-aging, but that is an off-label use, meaning it is not FDA-approved for aging and is not proven.

What the science shows

For diabetes, the evidence is strong and well established. The anti-aging idea rests mostly on studies that tracked groups of people over time plus animal research. A major trial designed to test whether it slows aging in adults without diabetes has not produced published results.

The catch

It is a real prescription medicine with real risks. Digestive upset is common, and long-term use is linked to low vitamin B12. A rare but dangerous problem called lactic acidosis (acid building up in the blood) can happen, mostly in people with kidney problems. Because the anti-aging benefit is unproven, any off-label use belongs with a prescriber, not a casual supplement.

Reference summary

T2D efficacy is robust and the label is mature. The longevity hypothesis rests on observational data (e.g., Bannister 2014 Diabetes Obes Metab reported lower all-cause mortality in metformin-initiated T2D patients vs sulfonylurea-initiated patients) plus animal models. The TAME (Targeting Aging with Metformin) trial has not yet produced a published outcome paper.

Regulatory and posture

Categories

Metabolic, Longevity

Aliases

Glucophage, 1,1-dimethylbiguanide, Biguanide (small molecule, not a peptide)

Evidence posture

human - Off-label longevity use is investigational; the TAME trial has not reported.

Regulatory status

FDA-approved for type 2 diabetes (Glucophage NDA 020357, Bristol-Myers Squibb, US approval 1995) and widely available as generic metformin hydrochloride. Off-label longevity use is not FDA-approved and is investigational.

Content review status

label verified