This study describes how emergency medical services developed a treatment protocol using methylene blue as an antidote for sodium nitrite poisoning. Sodium nitrite poisoning causes dangerous levels of methemoglobin in the blood, which prevents proper oxygen transport. Methylene blue was used by specialized paramedic teams to reverse this life-threatening condition. This represents a specific emergency medical application rather than a general health supplement use.
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Prehospital MB protocol reversed methemoglobinemia from nitrite exposure; supports paramedic-level antidote readiness.