{"ok":true,"entry":{"slug":"cinnamon","kind":"supplement","name":"cinnamon","aliases":["Ceylon cinnamon","Cinnamomum verum","cassia"],"brands_sg":["California Gold Nutrition","Frontier Co-op","Simply Organic","21st Century","Micro Ingredients"],"class":"botanical","tags":["general"],"use_for":"culinary spice — no clear benefit shown for any condition","use_after":"daily","use_duration":"nccih notes long or large use raises side effects","take_with":null,"pros":["safe in the amounts used in food as a spice","widely studied — many trials exist, mostly unclear","ceylon form carries only a trace of coumarin"],"cons":["research doesn't clearly support any health use","labels often omit the species and plant part used","cassia coumarin — an issue for sensitive people"],"dose_note":"nccih gives no supplement dose for cinnamon: it reports that cinnamon is likely safe when consumed in the amounts commonly used in foods as a spice or flavoring agent, and that when used in larger amounts or for long periods of time it is sometimes associated with side effects, most commonly gastrointestinal problems or allergic reactions; it also notes that cinnamon products may not clearly indicate which species or which part of the plant was used and that these differences can affect the product's impact on people, so a milligram figure on one label is not comparable with another; no number is quoted here because none is given","dosage":{"ul":null,"unit":"mg","fda_dv":null,"rda_ai":null,"ul_status":"none_established","population":"general adult","hsa_max_daily":null},"ul_status":"none_established","sg_class":null,"cautions":["liver disease — prolonged cassia use, coumarin levels vary by product","on any medicine — nccih flags an anticancer medicine and nicotine","pregnancy — ceylon cinnamon in larger amounts is considered unsafe","dry powder by the spoonful — nccih says serious harm is possible"],"clashes":[{"src":["nccih_cin_interact"],"note":"nccih: theoretical reasons to suspect some components may interact","with":"an anticancer medicine"},{"src":["nccih_cin_interact"],"note":"nccih: theoretical reasons to suspect some components may interact","with":"nicotine"}],"sources":[{"id":"nccih_cin_what","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon: Usefulness and Safety (Background; last updated November 2024)","quote":"Cinnamon is a spice that comes from the dried bark of various species of Cinnamomum trees. Ceylon cinnamon (Cinnamomum verum), known as “true” cinnamon, grows primarily in Sri Lanka.","accessed":"2026-08-27"},{"id":"nccih_cin_evidence","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (What Have We Learned?)","quote":"Research doesn't clearly support using cinnamon for any health condition.","accessed":"2026-08-27"},{"id":"nccih_cin_unclear","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (How Much Do We Know? / evidence quality)","quote":"There have been many studies of cinnamon … However, the results of the studies are difficult to interpret because it's often unclear which species or part of the cinnamon plant was tested.","accessed":"2026-08-27"},{"id":"nccih_cin_safety","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (What Do We Know About Safety? — food amounts vs larger amounts)","quote":"Cinnamon is likely safe when consumed in the amounts commonly used in foods … When used in larger amounts or for long periods of time, cinnamon is sometimes associated with side effects, most commonly gastrointestinal problems or allergic reactions.","accessed":"2026-08-27"},{"id":"nccih_cin_coumarin","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (Safety: coumarin and the liver)","quote":"Interactions between coumarin, a chemical found in cassia cinnamon, and the liver have been reported … Prolonged use of cassia cinnamon could be an issue for sensitive people, such as those with liver disease.","accessed":"2026-08-27"},{"id":"nccih_cin_species","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (Safety: species and plant part not always labelled)","quote":"Cinnamon products may not clearly indicate which species (e.g., Ceylon, cassia) or parts (e.g., bark, leaves, roots) of cinnamon have been used in the making of a product.","accessed":"2026-08-27"},{"id":"nccih_cin_interact","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (Safety: medicine interactions)","quote":"there are theoretical reasons to suspect that some components of cinnamon may interact with an anticancer medicine or nicotine. If you take any type of medicine, talk with your health care provider before using cinnamon","accessed":"2026-08-27"},{"id":"nccih_cin_pregnancy","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (Safety: pregnancy and breastfeeding)","quote":"Some studies of the use of Ceylon and cassia cinnamon during pregnancy suggest it is safe in amounts commonly found in foods, but Ceylon cinnamon in larger amounts during pregnancy is considered unsafe.","accessed":"2026-08-27"},{"id":"nccih_cin_challenge","url":"https://www.nccih.nih.gov/health/cinnamon","label":"NCCIH — Cinnamon (Safety: the “cinnamon challenge”)","quote":"Never consume cinnamon powder as part of the “cinnamon challenge,” an unsafe internet dare. Serious harm is possible.","accessed":"2026-08-27"},{"id":"hsa_claims","url":"https://file.go.gov.sg/hsa-hs-guidelines.pdf","label":"HSA Singapore — Health Supplements Guidelines, GL-CHPB-3-001 Rev. No. 020 (January 2026), s6.6 and Table 6: Examples of Diseases/Conditions/Disorders Not Allowed for Health Supplements","quote":"HS must not be labelled, advertised or promoted for any specific medicinal purpose … Endocrine system: Diabetes, thyroid disorders … Metabolic system: Obesity, gout","accessed":"2026-08-27"},{"id":"hsa_senna_cassia","url":"https://file.go.gov.sg/hsa-chp-prohibited-restricted-ing-guidelines.pdf","label":"HSA Singapore — Prohibited and Restricted Ingredients in HS and TM, GL-CHPB-1-012 Rev. No. 001 (October 2025), Annex item 95 — the senna genus Cassia, NOT Cinnamomum cassia","quote":"95. Senna alexandria, Cassia spp. — Restricted use in HS and TM — Cautionary Statement: “Contains sennosides. Prolonged use may cause serious bowel problems and loss of essential minerals. Seek medical advice for use beyond 1-2 weeks.”","accessed":"2026-08-27"},{"id":"hsa_annex","url":"https://file.go.gov.sg/hsa-chp-prohibited-restricted-ing-guidelines.pdf","label":"HSA Singapore — Guidelines on Prohibited and Restricted Ingredients in HS and TM, GL-CHPB-1-012 Rev. No. 001 (October 2025), Annex A/B full ingredient list","quote":"GUIDELINES ON PROHIBITED AND RESTRICTED INGREDIENTS IN HEALTH SUPPLEMENTS AND TRADITIONAL MEDICINES … The information in these Guidelines may be updated from time-to-time.","accessed":"2026-08-27"},{"id":"iherb_sg","url":"https://sg.iherb.com/c/cinnamon","label":"iHerb Singapore — Cinnamon Products category, default order (1 - 48 of 79 results)","quote":"California Gold Nutrition, Foods, Organic Saigon Cinnamon … Frontier Co-op, Organic Ceylon Cinnamon … Simply Organic, Ceylon Cinnamon … 21st Century, Cinnamon plus Chromium … Micro Ingredients, Ceylon Cinnamon","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:16.693643+08:00"},"disclaimer":"kozen-x is not a medical device and does not give medical advice. it lists what published sources have written down. absence of a record is not the same as safe."}