Is Green Coffee Extract Safe with Metformin?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Monitor blood glucose levels closely. Report symptoms of hypoglycemia (dizziness, sweating, confusion) to your healthcare provider. Do not start this supplement without medical supervision.
Why this interaction occurs
Green coffee extract contains chlorogenic acid, which slows glucose absorption and improves insulin sensitivity. Combined with Metformin, this additive effect may cause excessive blood glucose lowering, increasing hypoglycemia risk.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 432,898 reports mentioning Metformin. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Metformin + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Green Coffee Extract interactions → · All Metformin interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.