Oxygen is the foundation of life—every cell in the body depends on it to produce energy and function properly. But in many people, oxygen isn’t being used efficiently due to toxins, stress, illness, or mitochondrial dysfunction. This is where methylene blue becomes a powerful ally. Originally used in emergency medicine, methylene blue was known to save lives in cases of cyanide or carbon monoxide poisoning. It works by displacing toxins that block oxygen from binding to cells, allowing oxygenati