Amoxicillin is an antibacterial drug belonging to the penicillin class, which is good for treating colds, bronchitis and throat inflammation caused by bacterial infections, and the side effects are not very big. However, if it is caused by viral infection, there is no therapeutic effect with amoxicillin. If it is caused by mycoplasma or chlamydia infection, amoxicillin is also not considered for treatment, and macrolides are preferred and can be treated with erythromycin, azithromycin and other drugs. If you have a cold or cough for a longer period of time and the symptoms are severe, it is best to go to the hospital for an examination first and choose sensitive drugs for active treatment under the guidance of the doctor according to the examination results.