US Patent 10426726 Medical chewing gum

The invention relates to a medical chewing gum comprising gum base polymers and an active pharmaceutical ingredient, the gum base polymers comprising polyvinyl acetate and vinyl laurate-vinyl acetate copolymer in an amount of more than 90% by weight, wherein the gum base polymers include 20-95% by weight of polyvinyl acetate and -80% by weight of vinyl laurate-vinyl acetate copolymer, and wherein the chewing gum contains no polyterpene resins and no resins based on gum rosin, wood rosin or tall oil resin.