Amoxicillin is a broad-spectrum penicillin used for the treatment of typhoid and other Salmonella infections, ear, nose, throat and respiratory tract infections and skin soft tissue infections caused by Streptococcus pneumoniae and Streptococcus haemolyticus; genitourinary infections caused by Escherichia coli, Acinetobacter chimaera and Enterococcus faecalis, and leptospirosis. It can be used in combination with clarithromycin and lansoprazole to treat Helicobacter pylori infection. It is mainly used clinically for upper respiratory tract infections, such as sinusitis, pharyngitis, tonsillitis, etc., lower respiratory tract infections, such as acute bronchitis, pneumonia, etc., as well as various skin and soft tissue infections and genitourinary system infections. It is forbidden to be used in people who are allergic to penicillins, and penicillin skin test is also required for the oral dosage form.