Segmentation by types of empty capsules further refines the market taxonomy, focusing on material composition and functional attributes. Gelatin capsules, the traditional standard, dominate due to established processing infrastructure and consumer familiarity, yet face limitations related to animal‑origin concerns and moisture sensitivity. Hydroxypropyl methylcellulose (HPMC) capsules have captured roughly 30 % of the market, offering vegetarian compliance, enhanced stability, and resistance to humidity, thereby expanding use in moisture‑sensitive APIs. Pullulan capsules, a newer biopolymer option, provide superior oxygen barrier properties and are favored for probiotic and enzyme formulations, though higher production costs restrict broader adoption. Starch‑based capsules serve niche applications requiring rapid dissolution and low‑temperature processing, often in pediatric or geriatric formulations. The relative share of each type directly impacts raw‑material sourcing, equipment configuration, and cost structures, informing strategic investment decisions within the empty capsules for medical use market.