Eidon Ionic Minerals Immune Support -- 19 fl oz

What the brand says

Zinc, selenium, sulfur and silver play important roles in supporting our immune system. The onset of a cold or flu may be indicative of a temporary deficiency in one or more of these minerals. A strong immune system is also important in dealing with allergies and asthma. This formulation provides you with an optimal blend of essential elements necessary for a healthy immune system. A blend of 4 minerals essential for a strong and well functioning immune system.