Ginger root, rose hips, tulsi (holy basil), orange peel, lemon peel, lemon myrtle, lemon grass with ginger and citrus flavors. Extract of ginger has antibacterial effects, and inhibited the growth of staph bacteri. Rose hips are one of the richest plant sources of vitamin C. Tulsi seems to promote immune system function while. Certain fruits peel like in orange contains more vitamin C (ascorbic acid) than its juice. Lemon Peel is highly nutritional and loaded with important minerals and vitamins (especially ascorbic acid/vitamin C) that are beneficial in cases of vitamin deficiency helping to strengthen the immune system and build immunity against infection. Lemon myrtle has the highest citral content of any known plant (85-97%) – even higher than Lemongrass (75-85%) – it exhibits a strong ability to repel viruses.