The type classification of Sodium Phenylbutyrate further refines the market taxonomy into three product formats. Oral powder—manufactured for reconstitution into a suspension—holds the largest share, estimated at 60 %, due to its ease of administration in chronic UCD management and established dosing guidelines. Granular sachets, comprising pre‑measured units for pediatric use, account for about 25 % of sales; they simplify compliance and reduce preparation errors, which is valued in home‑care settings. The injectable solution format, representing roughly 15 % of the market, is primarily utilized in oncology trials and acute‑care scenarios where rapid plasma concentrations are required. These type segments influence manufacturing complexity, pricing tiers, and distribution channels, thereby shaping overall market size. By quantifying each format’s contribution, analysts can assess capacity planning, cost structures, and potential shifts as new delivery technologies emerge.