Cinnamon

The bark of tender branches is used. Constituents are trans-cinnamic aldehyde and Eugenol ^{(Fitoterapia.net, WHO 1999 p95)}. There are no clinical studies that adequately support the medicinal properties traditionally attributed as spasmolytic, carminative and antidiarrheal nor its effect in type 2 diabetes or polycystic ovary syndrome. ^{(Heshmati 2021. WHO 1999 p100)}

There are no clinical trials that adequately support the medicinal properties traditionally attributed as spasmolytic, carminative and antidiarrheal, nor its effect in type 2 diabetes or polycystic ovary syndrome. ^{(Heshmati 2021, WHO 1999)}

At latest update relevant published data on its excretion into breast milk were not found.

Cinnamon is commonly used as spice and flavoring for food and infusions. Widely used during lactation in some cultures. ^{(Eid 2020)}

Out of occasional irritation on skin and mucosa, there is a lack of toxicity and side-effects at the usual dosage. Do not overcome the usual amount used for food preparation.

Precautions when taking plant preparations ^{(Anderson 2017, Powers 2015, Posadzki 2013, Efferth 2011, Kopec 1999)}:

• Make sure they are from a reliable source. Poisonings have occurred due to confusion of one plant with another with toxic properties ^{(Hsu 1995)}, poisonings due to containing heavy metals extracted from the soil and food poisoning due to contamination with bacteria or fungi.
• Do not take in excess. Follow the recommendations of professional experts in herbal medicine. “Natural” products are not good in any quantity: plants contain active substances from which a large part of our traditional pharmacopoeia has been obtained and can cause poisoning or act as endocrine disruptors if they are consumed in an exaggerated quantity or time, because they contain phytoestrogens. ^{(Powers 2015, Zava 1998)}