From the FDA Drug Label
The FDA drug label does not answer the question.
From the Research
Benzocaine should not be used for mouth injuries due to the risk of methemoglobinemia, a potentially life-threatening condition, as highlighted in a recent case report 1.
Key Considerations
- Methemoglobinemia is a rare but serious complication associated with benzocaine use, which can lead to respiratory distress and potentially fatal outcomes if not promptly diagnosed and treated 1.
- The risk of methemoglobinemia is particularly concerning in children under 2 years old, and its use is not recommended in this age group 2.
- While benzocaine is a topical anesthetic that can temporarily numb pain from mouth injuries, its potential risks outweigh its benefits, especially when safer alternatives are available.
Alternatives and Precautions
- For adults and children over 12, alternative topical anesthetics or other pain management strategies should be considered to minimize the risk of methemoglobinemia.
- If benzocaine is used, it's crucial to follow the recommended dosage and application frequency to reduce the risk of adverse effects.
- Healthcare providers should be aware of the signs and symptoms of methemoglobinemia, such as cyanosis, confusion, and respiratory distress, and be prepared to provide prompt treatment with methylene blue if necessary 3, 4.