Amoxicillin capsules can treat some colds, but not all colds. Most of the colds are viral, and bacterial colds are only a minority. In addition, viral colds can be combined with bacterial infections on top of viral infections. Amoxicillin, also known as hydroxybenzyl penicillin, belongs to the penicillin class of antibiotics, which is a drug that kills bacteria, that is, a bactericidal agent, used to treat infections caused by sensitive bacteria, it has no effect on the virus that causes colds, so it cannot be used to treat viral colds, but can only be used to treat bacterial colds or combined with bacterial infections on top of viral colds. In addition, the infected bacteria must also be sensitive to amoxicillin capsules, and only sensitive bacteria can be killed by amoxicillin capsules for the treatment to be effective.