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Cinnamon
Cinnamon — o que a monografia europeia realmente apoia, para que não é, a forma e durante quanto tempo se destina a ser usado, efeitos adversos e a 3 interacção medicamentosas documentada.
Esta é uma página de referência, não um diagnóstico nem uma receita. Os produtos à base de plantas são farmacologia a sério: têm efeitos, efeitos adversos e interações. Diga ao médico e ao farmacêutico tudo o que toma, incluindo chás e suplementos, e nunca pare nem altere um medicamento prescrito por causa do que ler aqui.
O que é
Cinnamomum verum J.Presl (Ceylon) and Cinnamomum cassia (L.) J.Presl (cassia) — bark
Nomes locais na região que este sítio serve:kaneel (ET) · kaneli (FI) · корица (RU).
Agrupado aqui em Kitchen spices with a safety story. Posição regulamentar:Food and spice; the medicinal claim made for it is blood-glucose lowering.
O que a evidência apoia
A indicação registada:Nothing that survives a systematic review. It is a spice with a real safety figure attached.
Two different barks are sold as cinnamon in Europe and the difference matters more than the flavour. Almost all cheap supermarket ground cinnamon is cassia, which contains substantially more coumarin than Ceylon or "true" cinnamon, where coumarin is present only in traces. Coumarin is not warfarin — warfarin is a synthetic derivative — but it is hepatotoxic in sensitive individuals at sustained high intakes. EFSA set a tolerable daily intake for coumarin of 0.1 mg per kilogram of body weight per day; for a 60 kg adult that is 6 mg a day, a threshold that heavy cassia use can pass, whether through cinnamon capsules taken for blood sugar or through a season of heavy baking. National food authorities have issued repeated advice on exactly this. On the blood-sugar claim that drives the capsule market, a Cochrane review of cinnamon for diabetes found insufficient evidence to support it, and later reviews have not converged either.
D — Popular claim unsupported, or safety dominates The better trials are negative, or the substance appears in the literature mainly for the harm it has caused.
Para que não é
Type 2 diabetes. If your glucose needs lowering, that is a treatable condition with treatments that work and are monitored.
Forma, força e durante quanto tempo
Ground bark as a spice, cinnamon sticks (quills — Ceylon quills are thin, layered and brittle; cassia is a single thick curl), capsules of cassia powder or extract, and cinnamon essential oil, which is a potent irritant.
Duração.As a spice, indefinitely. As a daily capsule taken for blood sugar, the coumarin question makes long-term use the wrong side of the risk-benefit line.
Nenhum número em gramas aparece nesta página de propósito. A parte da planta, o solvente de extracção e a razão droga-extracto juntos definem uma preparação, e um número tirado de uma não descreve outra. O raciocínio está no hub; a quantidade que se aplica a si é a impressa na embalagem que segura, e um farmacêutico lê-a consigo.
Efeitos adversos
Mouth irritation and contact allergy from cinnamon oil and high-cassia products — cinnamon-flavoured chewing gum and toothpaste are a recognised cause of oral lesions. Liver effects at sustained high coumarin intake in susceptible people.
Quem deve evitá-lo
Anyone with liver disease should keep cassia intake modest. Cinnamon supplements are not established in pregnancy.
Interações com medicamentos
| Medicamento ou substância | O que é descrito |
|---|---|
| Diabetes medicines and insulin | Taking cinnamon capsules for blood sugar while on glucose-lowering medicines is running an uncontrolled experiment with an unstandardised product. If you want to try it, tell whoever manages your diabetes so the numbers are read properly. |
| Anything else that stresses the liver | Sustained high cassia intake alongside other liver stressors is the scenario the coumarin limit exists for. |
| Anticoagulants and antiplatelets (warfarin, DOACs, aspirin, clopidogrel) | Coumarin is not warfarin, but the confusion is widespread and high-dose cassia products should still be mentioned if you are on an anticoagulant. |
A vista inversa — começar pelo medicamento em vez da planta — está na referência de interações de medicamentos, alimentos e álcool, e resumido para cada erva neste sítio.
Como alimento
Este também está na cozinha, pelo que os números de nutrição valem ter ao lado da farmacologia: veja a página de dados de alimentos para calorias e nutrientes por 100 g e por porção. Quantidades culinárias e preparações medicinais são exposições diferentes, e a diferença costuma ser toda a história de segurança.
Fontes:European Food Safety Authority — scientific opinions on coumarin, green tea catechins and hydroxyanthracene derivatives · NIH National Center for Complementary and Integrative Health — herb fact sheets· verificado2026-09-06
Perguntas frequentes
Para que é usado cinnamon?
Nothing that survives a systematic review. It is a spice with a real safety figure attached. Two different barks are sold as cinnamon in Europe and the difference matters more than the flavour. Almost all cheap supermarket ground cinnamon is cassia, which contains substantially more coumarin than Ceylon or "true" cinnamon, where coumarin is present only in traces. Coumarin is not warfarin — warfarin is a synthetic derivative — but it is hepatotoxic in sensitive individuals at sustained high intakes. EFSA set a tolerable daily intake for coumarin of 0.1 mg per kilogram of body weight per day; for a 60 kg adult that is 6 mg a day, a threshold that heavy cassia use can pass, whether through cinnamon capsules taken for blood sugar or through a season of heavy baking. National food authorities have issued repeated advice on exactly this. On the blood-sugar claim that drives the capsule market, a Cochrane review of cinnamon for diabetes found insufficient evidence to support it, and later reviews have not converged either.
É que cinnamon funciona?
Classificado aqui D: The better trials are negative, or the substance appears in the literature mainly for the harm it has caused. Type 2 diabetes. If your glucose needs lowering, that is a treatable condition with treatments that work and are monitored.
Quanto cinnamon devo tomar?
Esta referência não imprime números em gramas, porque não se transferem entre preparações de força de extracto diferente. O que se pode dizer com honestidade é a forma e a duração:Ground bark as a spice, cinnamon sticks (quills — Ceylon quills are thin, layered and brittle; cassia is a single thick curl), capsules of cassia powder or extract, and cinnamon essential oil, which is a potent irritant. As a spice, indefinitely. As a daily capsule taken for blood sugar, the coumarin question makes long-term use the wrong side of the risk-benefit line.
Quais os efeitos adversos de cinnamon?
Mouth irritation and contact allergy from cinnamon oil and high-cassia products — cinnamon-flavoured chewing gum and toothpaste are a recognised cause of oral lesions. Liver effects at sustained high coumarin intake in susceptible people.
É que cinnamon interage com medicamentos?
Sim — documentado paraDiabetes medicines, Liver load, Anticoagulants, warfarin. Cada uma é descrita nesta página, com uma ligação para a referência do lado medicamento onde existir.
Outros emkitchen spices with a safety story
Garlic
Relief of symptoms of mild circulatory complaints, in traditional-use preparations. Not the treatment of cardiovascular disease.
Nutmeg
Nothing medicinal. It is on this list because it is the kitchen spice that poisons people.
Green tea extract
Marketed for weight loss and metabolism. Neither claim survives review.
Chilli and cayenne (capsaicin)
Topical relief of muscle and joint pain in low-strength preparations; high-concentration capsaicin patches are licensed medicines for peripheral neuropathic pain.
Manter a lista toda num só sítio
TempoLife regista suplementos juntamente com comida, sono e como realmente se sentiu — pelo que a resposta a “o que está a tomar?” é um ecrã, não um palpite.