Beechams all in one tablets 16s contain a combination of paracetamol phenylephrine and guaifenesin to provide an effective remedy for relieving chesty coughs sore throats blocked noses aches and pains headaches and fevers active ingredients for effective care beechams all in one tablets contains paracetamol a painkiller to help relieve pain and fever phenylephrine a nasal decongestant to help unblock airways and sinuses guaifenesin an expectorant to ease chesty productive coughs