If you've ever had a cold that just wouldn't go away, chances are it was sinusitis — an inflammation of the paranasal sinuses, the cavities within the bones that surround the nose.
The sinuses are lined with a thin membrane that produces mucus, which is normally swept along by hair cells and drains through small openings into the nasal cavity. Sinusitis (also called rhinosinusitis) starts when this drainage system becomes blocked, usually from swelling due to inflammation caused by infection or allergy.
Cinnamon has been used as a remedy for colds, flu, sore throat, congestion and other respiratory problems for thousands of years because of its antibacterial component.
Cinnamon works as an antibacterial agent by facilitating the destruction of germs and harmful bacteria. Bacteria in your upper respiratory system can cause inflamed membranes and nasal obstructions, which result in sinus congestion.
The inflammation of membranes causes them to become thicker. Inflamed sinus membranes narrow the passageway for air to be inhaled and exhaled through your nose. Since cinnamon is an anti-inflammatory, it may be used to soothe the membranes that line your sinuses and allow you to breathe easier.