The type dimension of the Wilsons Disease Treatment market is anchored by three primary therapeutic classes: chelating agents, zinc salts, and emerging biologics such as tetrathiomolybdate. Chelating agents—principally D‑penicillamine and trientine—function by binding excess copper and promoting urinary excretion, accounting for roughly 55% of global sales due to their long‑standing clinical adoption and broad indication coverage. Zinc salts, which impede intestinal copper absorption, represent about 30% of the market; their favorable safety profile drives usage in maintenance therapy and pediatric cohorts. Emerging biologics, still in late‑stage trials, currently capture near 10% of revenue but are projected to expand as they address limitations of existing agents, such as renal toxicity. Liver transplantation, while not a pharmacologic type, contributes the remaining 5% of market size as a definitive intervention for end‑stage hepatic failure. Together, these sub‑categories delineate the market taxonomy and illustrate how each type underpins overall market valuation in the Wilsons Disease Treatment segmentation.