Cefadroxil Syrup is used to treat a number of different bacterial infections. It's a cephalosporin antibiotic, which means it's a type of antibiotic. It works by preventing bacteria from growing. This antibiotic is solely used to treat bacterial infections. It is ineffective against viral infections. Apart from this, it kills bacteria by preventing the formation of cell walls, resulting in cell death. It is not effective against the common cold, the flu, or other viral diseases.