It consists of a pharmaceutical composition containing amitriptyline and ketamine, consisting of: - Amitriptyline, 2% -4% by weight - Ketamine, 2% -3% by weight - Propylene glycol, 5% -7% by weight - A non-ionic emulsion of type o / w (oil in water), 86% -90% by weight.Consiste en una composición farmacéutica que contiene amitriptilina y ketamina, formada por:#- Amitriptilina, 2%-4% en peso#- Ketamina, 2%-3% en peso#- Propilenglicol, 5%-7% en peso#- Una emulsión no iónica del tipo o/w (de aceite en agua), 86%-90% en peso.