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. 2017 Jul 14;18(5):923–927. doi: 10.5811/westjem.2017.6.33665

Table.

Adverse effects following over-the-counter benzocaine gel exposure in children.

Outcome and clinical effects Number of cases (n=99)
No effect 74
Minor effect 16
 Drowsiness 6
 Vomiting 3
 Reported wheezing/trouble breathing (normal upon MD exam) 2
 Swollen cheek 1
 Blisters/erythema on cheek 1
 Cough 1
 Cyanosis (normal upon MD exam) 1
 Ocular pain/irritation 1
 Tachycardia 1
 Hypertension 1
Moderate effect 3
 Corneal abrasion 1
 Difficulty breathing 1
 Cyanosis 1
 Lethargic 1
 Vomiting 1
Major effect 5
 Elevated methemoglobin levels 4
 O2 saturation < 90% 3
 Cyanosis 3
 Seizure 1
 Metabolic acidosis 1

The outcome of one case was lost to follow-up.