Betadine Cold Defence Adult Nasal Spray is an easy to use nasal spray clinically proven to fight against cold and flu viruses. Its ingredient Carragelose® is Natural, steroid free, and drug free. Clinically proven to shorten duration of cold and flu-like symptoms by 2 days. It can help reduce the severity of symptoms and shortens the duration of a cold or flu. Help to moisten the nasal lining to protect it from dryness and injury. Targets the area in the nasal cavity where cold and viruses first take hold and multiply. Clinically proven to eliminate 99% of common cold and flu viruses and reduces chances of recurrence of cold and flu. Non drowsy and non-addictive product. Can be used during pregnancy or lactation under the advice of your doctor. It has a unique filter system that allows preservative free and in-use stability for up to 1 year after opening