True Ceylon Cinnamon (Cinnamomum verum)
Metabolism & blood sugarFunction & benefits
Rich in water-soluble procyanidins and cinnamaldehyde; studies suggest it slows stomach emptying and inhibits starch-digesting enzymes, supporting stable blood sugar after meals.
Dosage & how to use
| Recommended dose | 1–2 g Ceylon cinnamon powder (or 500 mg water extract) |
| Best time to take | With starchy meals |
| Frequency | 1–2 times daily |
Best forms to choose
Ceylon cinnamon only (Cinnamomum verum); avoid Chinese cassia, which is high in liver-damaging coumarin.
Important warnings
The EFSA tolerable daily intake for coumarin is 0.1 mg per kg of body weight, which makes Ceylon cinnamon the safe choice for daily use
High doses are not for use during pregnancy
Drug interactions
It strengthens glucose-lowering drugs and insulin; monitor readings to avoid hypoglycaemia. Cassia cinnamon adds strain on the liver alongside liver-taxing drugs.
Related supplements
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Scientific references
- Allen RW et al. Ann Fam Med 2013 (meta-analysis) — PMID: 24019277
- EFSA Scientific Opinion on coumarin in flavourings and other food ingredients (2008)
Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)
⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.