Covonia dry cough formula contains the active ingredient pholcodine which reduces coughing in people with dry unproductive coughs as well as being frustrating a dry cough can cause your throat to become sore using covonia allows you to control your irritating cough therefore helping to prevent throat pain r r covonia is suitable for vegetarians vegans and coeliacs it is also free from alcohol and sugar making it ideal for drivers or those who follow a calorie controlled diet