Peramivir segmentation by type differentiates the commercially available intravenous formulation from investigational oral and biosimilar variants. The IV product, constituting roughly 85 % of the current market, benefits from a mature manufacturing pipeline, established dosing guidelines, and direct hospital procurement channels, which together generate the majority of revenue. Oral peramivir, still in Phase III trials, represents an emerging sub‑segment projected to capture up to 10 % of sales within five years, contingent on regulatory clearance and demonstrated bioequivalence. Biosimilar entrants, expected to launch after patent expiry, are modeled to claim the remaining 5 % of volume by leveraging cost‑advantage strategies and parallel tender processes in public‑sector hospitals. Each type influences the market size differently: the IV line anchors pricing power, the oral candidate introduces potential market expansion into outpatient settings, and biosimilars impose downward pressure on average selling price. This taxonomy clarifies how product‑type dynamics shape revenue composition and guide strategic investment decisions for stakeholders.