67 year old male with 101.8 fever, coughing up phlegm, wracking cough, body aches, nasal drainage, body aches. Has had a flu shot. Had bronchitis in December, recovered. Vomited just now. We ve been treating with OTC preparations such as Dayquil and Nyquil to control symptoms, but now the fever and vomiting is new. Any treatments we should try?