In 1926, it was discovered that a lack of a vitamin in mice's diet caused them to induce pellagra. In 1934, a doctor discovered an ingredient that had therapeutic effects on dermatitis in mice and named it vitamin B6. It wasn't until around 1938-1939 that vitamin B6 could be isolated and synthesized. It is a water-soluble vitamin. Pyridoxamine, pyridoxal, and pyridoxine...
