The present invention relates to an acetaminophen injectable aqueous solution for use in the treatment or in the prevention of pain by spinal administration, wherein said acetaminophen injectable solution is supersaturated. In certain embodiments, the acetaminophen injectable aqueous solution is administered simultaneously, separately or sequentially with a local anaesthetic by spinal administration.Stabilni superzasićeni injektabilni vodeni rastvor acetaminofena za analgetičku upotrebu spinalnom primenom pri čemu navedeni superzasićeni injektabilni vodeni rastvor sadrži rastvarač koji je degaziran ili značajno bez kiseonika ili vazduha i sadrži acetaminofen u koncentraciji većoj od 1.8 tež./zapr.Prijava sadrži još 10 patentnih zahteva.