As nouns the difference between methylcellulose and hypromellose

is that methylcellulose is a white powdery substance, obtained by the methylation of cellulose, that swells in contact with water to form a gel; it has many industrial applications while hypromellose is hydroxypropyl methylcellulose, a semisynthetic, inert, viscoelastic polymer used as a food additive, an excipient in oral medicaments, and an ophthalmic lubricant.