Abstract: A fiber-reinforced composite material can achieve dynamical properties at high levels, and can simultaneously improve Mode I interlaminar fracture toughness GIC and Mode II interlaminar fracture toughness GIIC. The fiber-reinforced composite material has a plurality of reinforcing-fiber-containing layers and an interposing resin layer between adjacent reinforcing-fiber-containing layers. The resin layer is composed of a cured product of a resin composition containing a compound having a benzoxazine ring of formula (1), epoxy resin, a curing agent, a toughness improver, and polyamide 12 powder. The composite material has a GIC of not lower than 300 J/m2, and a GIIC of not lower than 1000 J/m2: (R1: C1-C12 chain alkyl group; H is bonded to at least one of the carbon atoms of the aromatic ring at ortho- or para-position with respect to C to which the oxygen atom is bonded).

Abstract: To provide a swallowing-assistive drink for medicines that improves swallowing various medicines, is convenient and substitutable with ordinary drinking water, and does not disturb the efficacy of medicines and a swallowing method. A swallowing-assistive drink for helping swallowing medicines that contains water and an adhesive paste, forming a viscous liquid or a gelatinoid. If the drink is viscous liquid, the viscosity is 1,000-25,000 cP at 20° C., and if the drink is gelatinous, jelly strength is 10-100 g/cm2 at 20° C.

Abstract: To provide a swallowing-assistive drink for medicines that improves swallowing various medicines, is convenient and substitutable with ordinary drinking water, and does not disturb the efficacy of medicines and a swallowing method. A swallowing-assistive drink for helping swallowing medicines that contains water and an adhesive paste, forming a viscous liquid or a gelatinoid. If the drink is viscous liquid, the viscosity is 1,000-25,000 cP at 20° C., and if the drink is gelatinous, jelly gel strength is 10-100 g/cm2 at 20° C.