Methylene-blue. Teleamethylthionine chloride. (A diphenyl amine compound, also classed as an “aniline colour”). C16H18N3SCl. Trituration. Solution.   Clinical.-Albuminuria. Cancer. Cystitis. Epithelioma. Gonorrhoea. Hemicrania. Kidneys, affections of. Malarial fever. Neuralgia. Neurasthenia.