Panadol Cold & Flu All In One Tablets are used for the short-term relief of cold and flu symptoms including mild to moderate pain, headache, blocked nose and sore throat, chills and fever, and relief from chesty coughs. This all-in-one formula contains paracetamol, phenylephrine and guaifenesin to relieve cold and flu symptoms. Paracetamol acts as a pain reliever and fever reducer, guaifenesin works as an expectorant to help loosen mucus in chesty coughs, and phenylephrine hydrochloride is a decongestant that reduces swelling in the nasal passages to help you breathe more easily.