Safety · Supplement
Cinnamon: side effects, safety & interactions
High-dose cassia coumarin can stress the liver; additive glucose lowering with diabetes drugs.
- Overall grade
- Grade C
- Last revised
- 0
- graded outcomes
- 0
- references listed
Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.
The evidence in words
Safety profile
High-dose cassia coumarin can stress the liver; additive glucose lowering with diabetes drugs.
Interactions to respect
Metformin — Additive glucose lowering.
What Cinnamon is
Cinnamon (cassia or Ceylon) is a spice studied for blood-glucose control. Cassia is common and cheap; Ceylon is lower in coumarin.
The honest bottom line
A mild, unreliable glucose nudge. If you use it daily, choose Ceylon over cassia to avoid the coumarin liver risk.
Related reading
Entries that share this one's tags or conditions.
- Green Tea Extract (EGCG): side effects, safety & interactionsBrewed tea is safe. Concentrated extracts carry a rare hepatotoxicity risk; avoid high fasted doses.Evidence grade C
- Alpha-Lipoic Acid: side effects, safety & interactionsGenerally safe; can lower glucose (watch for lows with diabetes meds) and rarely triggers an insulin-autoimmune reactionEvidence grade B
- American Ginseng: side effects, safety & interactionsGenerally safe; additive glucose lowering; may reduce warfarin effect.Evidence grade C
- Apple Cider Vinegar: side effects, safety & interactionsDilute it — undiluted vinegar damages enamel and the esophagus; additive glucose lowering; caution with low potassium.Evidence grade C
Sources
This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.
Last revised . A grade is this entry's reading of the evidence, not medical advice.