Powdered Compositions for nasal administration comprising a crystalline cellulose aggregate having a particle size sieving particular as a carrier and their non-peptide-proteinaceous drugs. This composition provides a high absorption in addition to immediate drug.非ペプチド・タンパク性薬物とそれらの担体としての特定の篩過粒径を有する結晶セルロース集合体とを含んでなる粉末状経鼻投与用組成物。この組成物は、薬物の速効性に加えて高い吸収性をもたらす。