Suggest Treatment For Throat Pain And Cough

Hi my partner has been coughing mucas up for a week and yesterday had a sore throat then in the afternoon he developed the pain from the throat down the left hand side of his face and he could not swallow hardly so to even sip water was hard the hospital gave him oral form phenoxymethyl penicillin and he has been taking now for 24hrs he says the pain is like swallowing glass