Compositions having high fluoride ion recovery comprising a hydrocolloid, a heteropolysaccharide, a PVME/MA copolymer, and a fluoride ion source and use thereof, e.g., in the treatment of xerostomia and/or sensitive teeth.包含水膠體、異多糖、PVME/MA共聚物和氟離子源之具有高氟離子回收率的組成物,及其於例如於治療口乾症及/或敏感性牙齒的用途。