A Vogel Sinna - Natural relief for sinus inflammation and congestion. A Homeopathic combination of Duckweed, Sponge Cucumber and Cinnabar, designed to work synergistically to clear plugged sinuses, normalize nasal mucous flow, and reduce inflammation in the nasal cavities. A. Vogel Sinna, in tablet form, can be dissolved in the mouth for maximum absorption and bio-availability, and is ideal for those who have difficulty swallowing pills.