Cinnamon (Cinnamomum zeylanicum)

This herb grew in Ceylon, which was then invaded by the Portuguese, who went on to use this herb in many of their traditional dishes.

This herb dates back around 4,000 years and is a popular herb used in Traditional Chinese Medicine (TCM). It has a strong standing in herbal folklore and was used to treat a variety of illnesses. 

Description and the places it grows in 

Trees grow in many tropical areas such as Brazil, Madagascar, parts of India, and the Caribbean. 

Parts used

Oil, powder, sticks, and bark of the tree.

Uses 

Stimulant, astringent, demulcent, and carminative.

Yeast infections: Those with AIDS and related recurring thrush infections such as oral candida can be treated with mouthwashes containing cinnamon oil.

Other uses: Peptic ulcer, poor appetite, menstrual disorders.

Constituents

Those that are active include various terpenoids in the essential oil. Also eugenol and cinnamaldehyde. 

Contraindications

Possibility of developing contact dermatitis and allergies. Over use can cause mouth irritation and inflammation. Not recommended for those who are pregnant.