The types segment classifies Sivelestat Sodium products according to their delivery modality: intravenous injection, nebulized inhalation, and oral formulation. Intravenous injection dominates the market, contributing approximately 70% of sales, as it is the only route approved for acute, hospital‑based management of ALI and ARDS, ensuring rapid plasma concentrations. Nebulized inhalation, accounting for about 20% of revenue, is gaining traction in outpatient and step‑down settings where localized pulmonary delivery can reduce systemic exposure while maintaining therapeutic effect. Oral formulations, still experimental, represent the remaining 10% and are primarily confined to clinical‑trial pipelines and compassionate‑use programs; their future market share hinges on successful bioavailability studies and regulatory approval. Together, these type categories shape the market’s revenue composition and guide R&D investment, underscoring the importance of delivery technology in the overall Sivelestat Sodium market taxonomy.