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)