I just read an interesting article about cinnamon and clove preventing the conversion of the amino acid histidine to histamine. Vitamin B6 helps to break up histamine formed in the digestive system and keep it from being absorbed.The amino acid histidine is needed to make hemoglobin.. If it is converted to histamine, it isn't available to be used to make hemoglobin. Cinnamon also has many other beneficial properties. It is sweet, but has no sugar, and very few calories(18 per tablespoon?)

Cinnamon and clove are also antifungal, antibacterial, and antiparasitic.

http://whfoods.org/genpage.php?tname=dailytip&dbid=246
http://www.herbwisdom.com/herb-cinnamon.html