Another significant use of HPMC is in controlled-release formulationsmeilose hydroxypropyl methyl cellulose(hpmc). The polymer's ability to form a gel layer when exposed to an aqueous environment enables the creation of coatings that regulate the rate at which the API is released from the dosage form. This is particularly beneficial for drugs that require sustained release over an extended period to maintain therapeutic levels in the bloodstream or to reduce dosing frequency.