Covonia Catarrh Relief Formula is a herbal remedy that clears and inhibits catarrh in the nose and throat. This cough mixture is traditionally used to relieve the symptoms of nasal and throat congestion. This pain relief cough syrup features active ingredients which have been traditionally used to alleviate catarrh in the nose and throat. This rapid action formula has been used traditionally to bring relief from the symptoms of cold and flu as well as helping to reduce pain and discomfort caused by sore throats. It works to stop catarrh clogging up airways in the nose and throat symptomatically relieving these areas of congestion. This cough syrup contains Boneset an anti-catarrhal that inhibits the production of catarrh in the nose and throat. Boneset is also used as a booster for the immune system to help protect against further illness. It also contains another anti-catarrhal Hyssop. The formula is non-drowsy and suitable for children aged 12 and over.