This is a common query from regular Covonia users. The most likely explanation for this experience is that the bottle was not adequately shaken. Some of the natural oils used in the formulation tend to separate to the surface when the bottle is at rest and therefore the product carries the instruction to “shake the bottle vigorously” before use.
Covonia Catarrh Relief Formula is a remedy traditionally used for the symptomatic relief of nasal catarrh and catarrh of the throat. Boneset is an anticatarrhal (reduces production of catarrh) and is also an immunostimulant (boosts your immune system). Hyssop is an anticatarrhal (reduces production of catarrh).
Covonia Bronchial Balsam contains Dextromethorphan Hydrobromide which reduces the desire to cough in people with troublesome unproductive (dry) coughs. Menthol also acts to relieve irritation, reduces congestion and helps you breathe more easily.