<prompt> All of the following drugs can induce Methemoglobinemia, except -NitroglycerineProcainePrilocainePhenytoin  <response>: Ans. is d i.e., Phenytoin Substances or drugs causing Methemoglobinemia 1. Aniline and its derivatives 2. Aminophenols 3. Aminophenones 4. Chlorates 5. Dapsone 6. Local anaesthetics - Prilocaine, Benzocaine 7. Nitrites9. Naphthalene 8. Nitrates Nitroglycerine is included in nitrates 10. Nitrobenzenes and related compounds 11 . Oxides of Nitrogen 12. Phenazopyridine 13. Primaquine and related antimalarials 14. Sulfonamides 