Clarithromycin
"After an 8 week cold, 3 weeks a of bad cough and generally feeling under the weather and out of breath even on the gentlest of slopes, I went to the doctor who diagnosed bronchitis. I was put on a 5 day course of Clarithromycin 500 mg pills and a 10 day burst of Prednisalone starting at 30 mg. Even after one antibiotic I felt relief. I had no side effects whatsoever. I maybe should mention I have an autoimminune disease, PMR, and take a very low dose of steroids and also Omezrapol (a gastric resistant capsule prescribed for people taking steroids). I live in Scotland where all prescriptions are free."