Zucol Coldcare Lozenges Orange Creme, 18 CT Menthol, 18 CT Taken at the earliest signs of a cold, Zucol works fast by targeting the entire upper respiratory system Reducing the severity and duration of upper respiratory tract infections, including bronchitis, sinusitis, tonsillitis and laryngitis. Zucol is safe for both adults and children. The secret to Zucol is its active ingredient - an extract from a plant called pelargonium sidoides. Pelargonium is grown in South Africa, and has been used for generations as a remedy in Europe and Africa. The plant extract has properties that boost immune function and contains antimicrobial properties which has a limiting effect on the intensity of the viral infection. It also increases ciliary beat frequency that speeds up the movement of mucus out of the upper respiratory mucus membranes. Information facts from: www.zucol.com