1) The nasal spray UNIT is the best fit-for-purpose, i.e. far superior to any other on the market. Worth buying just for the spray unit :-) 2) The ingredients should clear any nasal congestion. The colloidal silver is an added benefit! 3) I strongly recommend this product, whether for cold/flu season or allergy season!
My husband loves this product. He uses it when he travels on airplanes. Since flu season rolled around he also takes it to work and seems to be pleased with how well it works to prevent viral infection. So far it’s an excellent product. Thanks Health Ranger!!