<unk>  is a heterocyclic aromatic chemical compound that is FDA approved for the treatment of drug induced methemoglobinemia.   Common adverse reactions include Hypertension, hypotension, sweating symptom, abdominal pain, diarrhea, nausea, vomiting, dizziness, headache and confusion.
Methylene blue
Ethacridine lactate
Isosulfan blue
Charcoal
Fomepizole
Manganese dioxide
Indigo carmine
Indium oxyquinoline