Hydroxypropyl Methylcellulose (HPMC) waa unug cellulose ah oo si ballaaran loogu isticmaalo warshado kala duwan, oo ay ku jiraan dhismaha iyo daawooyinka. Xulashada heerka HPMC ee ku habboon waa mid muhiim u ah gaarista waxqabadka ugu wanaagsan ee codsiyada sida hoobiyaasha isku darka qalalan iyo qaacidooyinka dawooyinka. Hagahan wuxuu sahaminayaa arrimaha muhiimka ah ee la tixgelinayo marka la dooranayo heerka HPMC ee saxda ah ee mashruucaaga, isagoo diiradda saaraya kala duwanaanshaha viscosity, kala duwanaanshaha heerkulka jel, iyo methoxyl/hydroxypropyl.