Which is safer and more tolerable between azithromycin and erythromycin?

Antibiotics : Decisions on antibiotics use in many countries are made by the patient who buys them in the store. This is so unfortunate because they can cause harm to the patient the general population as the negative effects trickle into others' health who innocently did nothing to bring it on themselves. These antibiotics are often over used for patient with viral respiratory illness without any help.