Unveiling Methylene Blue: A Century-Old Compound at the Crossroads of Hematology and Beyond

By Investigative Reporter Alex Rivera, for Red Blood Journal

In the annals of medical history, few substances bridge the gap between industrial dye and life-saving drug as vividly as methylene blue (MB). First synthesized in 1876 by German chemist Heinrich Caro as a textile colorant, this deep-blue compound has evolved into a multifaceted tool in clinical practice, particularly within hematology. Today, as of Oct…