Is Cinnamon Safe with Metformin?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Cinnamon supplementation is generally low risk with metformin but monitor blood glucose periodically. Inform your healthcare provider of all supplements being taken.
Why this interaction occurs
Cinnamon has modest insulin-sensitizing properties. When combined with metformin, additive but generally mild glucose-lowering effects may occur. Clinical significance is low in most patients but warrants awareness.
Evidence
Evidence level: limited.
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 Cinnamon interactions → · All Metformin interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.