An Atypical Case of Methemoglobinemia due to Self-Administered Benzocaine

Table 1

Drugs known to induce methemoglobinemia (not inclusive) [1, 2].

Amyl nitrite; Benzocaine; Bupivacaine; Dapsone; Lidocaine; Metoclopramide

Nitric oxide; Nitroglycerin; Nitroprusside; Nitrofuran; Phenazopyridine

Prilocaine; Quinones; (e.g., chloroquine); Rifampin; Sulfonamides; (e.g., sulfamethoxazole)