If you or your child has any of the following symptoms you should consult your doctor so that the cough can be investigated further: coughing up phlegm that is green, rusty brown, yellow, blood-stained or foul smelling; shortness of breath, wheezing or difficulty breathing; chest pain; pain and swelling in the calf; sudden weight loss; recurrent night-time cough; or a long-term persistent cough.Do not exceed the recommended dose. If symptoms persist consult your doctor. Use with caution in Severely decreased kidney function Severely decreased liver function. Not to be used in Children under 6 years of age, unless on the advice of a doctor. You should carefully read all product packaging and labels prior to use