What it does new to sudafed our mucus relief triple action cold amp flu tablets help relieve the symptoms of cold and flu including aches and pains headache blocked nose sore throat chills and chesty coughs how it works the active ingredients help loosen the mucus in your chest and the decongestant which eases swelling in the nasal passages the tablets also contains a pain killer to relieve pain and help bring down your temperature helping to get you back to your clear