Glycine is included, the stabilization medicine of acetamino foehn in the water constituent. Furthermore, when the sodium sulfite, the sulfites of 1 where it is chosen genera are included at least from the group which consists of the potassium sulfite, and the pyro potassium sulfite, more it is effective. Prevention of precipitation is included in stabilization.グリシンを含む、水性組成物中のアセトアミノフェンの安定化剤。さらに、亜硫酸ナトリウム、亜硫酸カリウム、及びピロ亜硫酸カリウムからなる群より選ばれる少なくとも1種の亜硫酸塩類を含むと一層効果的である。安定化には析出防止が含まれる。