Longjiao San Lozenges, a lozenges type of medicine, are used to treat and prevent laryngitis. However, there are some contraindications to taking Longjiao San Lozenges with extra caution. Longjiao San throat lozenges are traditional Chinese medicine, which can have certain effects on the liver and kidneys. Patients with poor liver and kidney function should not take Longjiao San throat lozenges. Pregnant women, children and nursing mothers should not take Longhorn lozenges. Because Longjiao San Lozenges is a traditional Chinese medicine, it is important to pay attention to contraindications when taking traditional Chinese medicine, and some traditional Chinese medicines that conflict with it should also be avoided as much as possible to avoid other serious physical reactions and drug reactions.