Macrolide antibiotics are a type of antibiotics used in treating and preventing different conditions, including chest and lung infections. They can also be used by people who are allergic to penicillin, as stated by NHS.
Macrolides work by inhibiting the multiplication of bacteria through preventing them from producing proteins that are required for their growth. Consequently, the bacteria get killed by the immune system. The different types of macrolide antibiotics include azithromycin, clarithromycin, spiramycin, erythromycin and telithromycin. Most antibiotics are used to treat conditions that are caused by bacteria. It is not advised to use these antibiotics for conditions caused by viruses, as stated by HSE.