It is a local anesthetic that blocks the sensory receptors of the mucous membranes, reducing the permeability to ions .
Composition
The drug is barely absorbed, it starts working for the next 30 seconds and lasts about 10 to 15 minutes.
Contraindications
Hypersensitivity to local anesthetics derived from PABA . Especially children under 4 months.
Precautions
It should not be chewed while the numbness persists, as well as not eating in the hour following the application, it may have a risk of aspiration. The dose should be reduced in the weak, children and the elderly.
Posology
Dental or gingival topical application.
- 5% and 20% solution: for temporary relief of toothaches, teeth, gums and discomfort due to rubbing of dentures and dental extractions. Adults and children over 6 years: up to 4 times a day; between 2-6 years, elderly and debilitated: up to 2-3 times a day. Gel 20% adults over 18 years old will be applied maximum 3 times a day. Gel and 5% solution, also in primary teething phases: adults and children under 4 months: one touch 3 to 4 times a day.
- 20% solution: anesthetic prior to endoscopy : abundantly spray the area to be anesthetized, also smear the end of the endoscope .
Interactions
- Inhibits action of sulfa drugs .
- Cholinesterase inhibitors inhibited metabolism .
- In the laboratory do not use 72 hours before the pancreatic puncture test with bentiromide .
Pregnancy
There are no adequate and controlled studies in humans. Low systemic absorption, fetal risk seems minimal with moderate doses for short periods of time, however it is only accepted in the absence of a safer alternative.
Lactation
It is not known whether benzocaine is excreted in human milk. Due to poor systemic absorption, minimal excretion in human milk can be expected and therefore no significant risk to the infant using moderate doses for short periods of time.
Adverse reactions
Mouth burn; in prolonged contact with the mucous membranes, it hardens them.