Company registration number: 06866013 | VAT number: GB 865368680. Immunity Defence Drops Company registration number: 06866013 | VAT number: GB 865368680. also contain echinacea, eleuthero, rosemary, and schisandra berry to help level-out cortisol levels and fight the symptoms of illness. Each alcohol-free drop contains potent anti-bacterial benefits and can rest taken directly under the tongue for fast absorption or added to water.