Biotica Sulphur (trace element) 12 blisters. Sulfur: Sulfur is a regulator of the allergic properties in association with manganese. Sulfur improving defenses against upper respiratory tract infections especially in cases of tonsillitis, nasopharyngitis, and otitis. Oligotherapy is the use of certain minerals and metals in the treatment of various health problems. These trace elements are involved in very small quantities in biological functions and exchanges necessary to the proper functioning of our body Trace elements are involved mainly in the absorption and metabolism of foods, in renewing tissues, strengthening the body's defense (immune system) against infection and help reduce allergic reactions. Trace elements allow the preservation of balance in our body.