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This is one place that thyme really shines. Make your cough syrup with Thymus Vulgaris, leaving the other varieties for the stockpot. Famed for its medicinal qualities, this variety of thyme contains thymol which acts against certain harmful bacteria. It is also known to improve liver function, increase appetite, help with bronchial infections, and help to treat laryngitis. Used on the skin, it can also reduce pain related to bug bites and stings.
Another well know spice in the kitchen cinnamon is also known for it's medicinal properties. While not really an herb I still think it's important to list it in our list of herbs and their uses. Cinnamon actually comes from the inner bark of a tree in the laurel family. It's been used for centuries and was a hot commodity for trade in ancient times. In fact during the first century A.D. in Rome cinnamon was 15 times more expensive than silver. The Chinese were probably the first to use cinnamon as a medicinal herb and used it to treat fevers, and diarrhea. In more modern times cinnamon has been found to stabilize blood sugar levels in diabetics, as it has an insulin kind of effect.