100,000 studies. Zero deaths. One approval. Dimethyl sulfoxide has been studied for over sixty years. It has been used by millions. It has killed no one. The FDA has approved it for exactly one condition. The DMSO Book compiles nearly 330 questions and answers across six major sources: A Midwestern Doctor's combination therapy series, Morton Walker's foundational 1993 text, Amandha Dawn Vollmer's practical guide, Archie Scott's clinician handbook, klimer's first-person survivor account, and A Midwestern Doctor's work on DMSO and cancer. It covers chronic pain. Burns. Strokes. Autoimmune conditions. Antibiotic-resistant infections. Eye diseases. Cancer. It documents preparation, dosage, and combination protocols with antibiotics, chemotherapy, magnesium, ivermectin, anaesthetics, and antifungals. It traces the history — Zaytsev's 1866 synthesis, Herschler's discovery at Crown Zellerbach, Jacob's clinical breakthrough at Oregon Health Sciences — and the FDA's decades-long suppression of the research. The compound wasn't dangerous. It was too versatile to be allowed. The evidence exists. This book collects it.