 [ Symptoms ] how long does it take to decrease fever after starting antibiotics my husband was diagnosed with sinusitis and early pneumonia he was given a shot of rocephin and then sent home with 7 days of levoquin once daily he took his first dose of levoquin at about 7 pm last night he is still running fevers of 100 4 100 8 how long should it take for his fever to go away he is also having head aches and sore throat unrelieved by motrin 400 mg or tylonol 650 mg how long will it take the antibiotics to relieve these symptoms as well [ Disease ] i am glad to hear your brother has quit smoking and is doing so well post surgery that is fantastic exercising after coronary artery bypass surgery is a good way to keep the heart healthy that said your brother should consult his surgeon for details concerning how much he should be exercising it is possible he is doing too much and then again it is possible his doctor wants him doing more than he is a simple phone call to his surgeon is office will get him the information he needs to keep his ticker in tip top shape every heart patient is different and the post surgery exercise program is unique to the individual i am sure the person who told him not to mow the lawn was well meaning but it is best to get medical advice from a medical professional wishing your brother well