Emkhakheni wemithi, i-Hydroxypropyl Methylcellulose (HPMC) ivela njengesithako esibalulekile nesiguquguqukayo, ikakhulukazi uma isetshenziswa ekwakhiweni kwamaphilisi. Lesi sihloko sinikeza ukuhlola okujulile kokuthi i-HPMC idlala kanjani indima ebalulekile ekudalweni kwamaphilisi, ithonya izakhiwo zawo kanye nokusebenza kwawo.