What is Metformin?

The short answer

In the US, you need a prescription to get Metformin.

2 sources
Status as of October 4, 2026
How we source
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By Ellum EditorialUpdated October 4, 2026AI use

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What it is

Type: Biguanide (not a peptide)
Also known as: metformin hydrochloride, glucophage, glucophage xr, metformin er, metformin longevity, metformin for aging

Regulatory status

FDA-approved (Rx) How we label status

As of October 4, 2026, Metformin is an FDA-approved prescription drug for type 2 diabetes.

See Metformin in the Index →

Federal (FDA): Approved Rx (Glucophage NDA020357 1995, disc.; 200+ ANDAs); label: type 2 diabetes. Boxed warning: lactic acidosis
503A compounding: Approved-drug component (not in any 503A category) (as of May 14, 2026)
WADA 2026: Not named on the 2026 List

References

Sources as of October 4, 2026