Proveblue is a pharmaceutical formulation of methylene blue, which is a synthetic dye with a variety of medical applications. It is primarily used as a medication for the treatment of methemoglobinemia, a condition where hemoglobin is unable to release oxygen effectively to body tissues. Proveblue works by reducing the ferric iron in hemoglobin back to its normal, oxygen-carrying ferrous state. Additionally, it has been explored for its potential therapeutic effects in other conditions, including malaria and certain types of poisoning. Proveblue is administered intravenously and is known for its distinctive blue color, which can also turn the urine and sometimes the skin a blue color, a harmless side effect. It is important for Proveblue to be used under medical supervision due to its potent effects and the potential for serious side effects in certain individuals.