A composition for forming a film, the composition comprising: a first hydroxypropyl methyl cellulose polymer having a viscosity at 20°C of from 2.5 to 4.5 mPa·s, as determined in a 2% by mass aqueous solution; a second hydroxypropyl methyl cellulose polymer having a viscosity at 20°C of from 6.0 to 50.0 mPa·s, as determined in a 2% by mass aqueous solution; a third hydroxypropyl methyl cellulose polymer having a viscosity at 20°C of from 4.5 to 15.0 mPa·s, as determined in a 2% by mass aqueous solution; a gelling agent; and a solvent; wherein the first hydroxypropyl methyl cellulose polymer is selected from three members: one member in Group I: hydroxypropyl methyl cellulose IA having a degree of substitution of methoxy groups of from 1.80 to 2.00 and a molar substitution of hydroxypropoxy groups of from 0.20 to 0.34, and two members both in Group II: hydroxypropyl methyl cellulose IIA having a degree of substitution of methoxy groups of from 1.10 to 1.60 and a molar substitution of hydroxypropoxy groups of from 0.10 to 0.33, and hydroxypropyl methyl cellulose IIB having a degree of substitution of methoxy groups of from 1.80 to 2.00, and a molar substitution of hydroxypropoxy groups of from 0.40 to 0.70, wherein the second hydroxypropyl methyl cellulose polymer is the same member as that of the first hydroxypropyl methyl cellulose polymer, provided that DS of the second hydroxypropyl methyl cellulose polymer may be the same as or different from DS of the first hydroxypropyl methyl cellulose polymer and MS of the second hydroxypropyl methyl cellulose polymer may be the same as or different from MS of the first hydroxypropyl methyl cellulose polymer, and wherein the third hydroxypropyl methyl cellulose polymer is selected from a member or members in a Group different from the Group of the first hydroxypropyl methyl cellulose polymer. a first hydroxypropyl methyl cellulose polymer having a viscosity at 20°C of from 2.5 to 4.5 mPa·s, as determined in a 2% by mass aqueous solution; a second hydroxypropyl methyl cellulose polymer having a viscosity at 20°C of from 6.0 to 50.0 mPa·s, as determined in a 2% by mass aqueous solution; a third hydroxypropyl methyl cellulose polymer having a viscosity at 20°C of from 4.5 to 15.0 mPa·s, as determined in a 2% by mass aqueous solution; a gelling agent; and a solvent; wherein the first hydroxypropyl methyl cellulose polymer is selected from three members: one member in Group I: hydroxypropyl methyl cellulose IA having a degree of substitution of methoxy groups of from 1.80 to 2.00 and a molar substitution of hydroxypropoxy groups of from 0.20 to 0.34, and two members both in Group II: hydroxypropyl methyl cellulose IIA having a degree of substitution of methoxy groups of from 1.10 to 1.60 and a molar substitution of hydroxypropoxy groups of from 0.10 to 0.33, and hydroxypropyl methyl cellulose IIB having a degree of substitution of methoxy groups of from 1.80 to 2.00, and a molar substitution of hydroxypropoxy groups of from 0.40 to 0.70, one member in Group I: hydroxypropyl methyl cellulose IA having a degree of substitution of methoxy groups of from 1.80 to 2.00 and a molar substitution of hydroxypropoxy groups of from 0.20 to 0.34, and two members both in Group II: hydroxypropyl methyl cellulose IIA having a degree of substitution of methoxy groups of from 1.10 to 1.60 and a molar substitution of hydroxypropoxy groups of from 0.10 to 0.33, and hydroxypropyl methyl cellulose IIB having a degree of substitution of methoxy groups of from 1.80 to 2.00, and a molar substitution of hydroxypropoxy groups of from 0.40 to 0.70, hydroxypropyl methyl cellulose IIA having a degree of substitution of methoxy groups of from 1.10 to 1.60 and a molar substitution of hydroxypropoxy groups of from 0.10 to 0.33, and hydroxypropyl methyl cellulose IIB having a degree of substitution of methoxy groups of from 1.80 to 2.00, and a molar substitution of hydroxypropoxy groups of from 0.40 to 0.70, wherein the second hydroxypropyl methyl cellulose polymer is the same member as that of the first hydroxypropyl methyl cellulose polymer, provided that DS of the second hydroxypropyl methyl cellulose polymer may be the same as or different from DS of the first hydroxypropyl methyl cellulose polymer and MS of the second hydroxypropyl methyl cellulose polymer may be the same as or different from MS of the first hydroxypropyl methyl cellulose polymer, and wherein the third hydroxypropyl methyl cellulose polymer is selected from a member or members in a Group different from the Group of the first hydroxypropyl methyl cellulose polymer.