Case Series of Self-Inflicted Sodium Nitrite Toxicity in Three Michigan Counties: A Comparison of Scene Investigations, Toxicology, and Autopsy Findings. Sodium nitrite toxicity has become increasingly popular as a means for suicide due to its ease of access within the United States. It is commercially available and used as a food additive, antifreeze admixture, and medically utilized as an antidote for cyanide poisoning. Ingestion of a large amount of sodium nitrite, an odorless, white, and water-soluble crystalline powder, can induce severe methemoglobinemia; a metabolic disorder characterized by the inability of hemoglobin to bind and carry oxygen throughout the body. The presentation highlights eight cases from three different southeast Michigan counties of suicide by sodium nitrite ingestion. The presentation also explores the social aspect in the alarming increase rate of suicide by sodium nitrite ingestion, and the careful considerations forensic pathologists need to be aware of when encountering these cases.