Side effects that may occur while taking this medication include: Back pain, Body aches or pain, Congestion, Constipation, Cough producing mucus, Diarrhea, Difficulty in breathing, Dryness or soreness of throat, Ear congestion, General feeling of discomfort or illness, Hair loss, Headache, Heartburn, Loss of appetite, Loss of voice, Muscle aches and pains, Muscle or bone pain, Muscle stiffness, Nasal congestion, Nausea, Pain, swelling or redness in joints, Runny nose, Shivering, Sneezing, Voice changes