UMCKA® is made from Pelargonium sidoides roots and has its origins in traditional South African folk medicine. Clinically proven, in more than 25 scientific studies, to shorten duration and reduce symptom severity of the common cold, bronchitis, laryngitis & pharyngitis. Recommended use: Clinically proven to relieve symptoms associated with the common cold, bronchitis, laryngitis and/or pharyngitis. Helps to reduce duration of the common cold, bronchitis, laryngitis and/or pharyngitis.