Eating too much throat lozenges can also lead to oral ulcers, because most throat lozenges contain components such as mint or iodine, which directly stimulate the oral mucosa, just like the chemical stimulation of sulfuric acid on the skin. Therefore, when there is no inflammation in the mouth, don't eat too many throat tablets to avoid oral ulcers.

2. Antibiotics

Many broad-spectrum antibiotics can induce oral ulcer, because ampicillin, cefalexin, metronidazole, tinidazole and other broad-spectrum antibiotics have a wide range of antibacterial activities, but lack of pertinence, which is easy to cause flora imbalance and fungal growth, thus causing oral ulcer. If you find the above situation, you should consult a doctor in time and try to take other drugs instead.

3. Antipyretic and analgesic drugs

It is reported that antipyretic and analgesic drugs, such as aspirin and diclofenac sodium, can cause oral ulcers. Antipyretic and analgesic drugs are mostly organic weak acids, which have stimulating effect on mucosa and are prone to allergic reactions, leading to oral mucosal damage.

Experts from Beijing Guo Long Hospital of Traditional Chinese Medicine warned: In addition, chemotherapy drugs such as methotrexate and vincristine can also cause oral ulcers. Chemotherapeutic drugs are cytotoxic and oral mucosa grows rapidly. Therefore, chemotherapy drugs are more toxic to them, leading to oral ulcers.