A probiotic preparation comprising metabolically active, viable probiotic bacteria in a non-dairy liquid substrate for use in the treatment of Irritable Bowel Syndrome, wherein the probiotic preparation comprising a mixture of Enterococcus faecium, Lactobacillus plantarum, Lactobacillus acidophilus, and Lactobacillus casei or Lactobacillus rhamnosus or both Lactobacillus casei and Lactobacillus rhamnosusUna preparación probiótica que comprende bacterias probióticas metabólicamente activas, viables en un sustrato líquido no lácteo, para su uso en el tratamiento del Síndrome de Colon Irritable, donde la preparación probiótica comprende una mezcla de Enterococcus faecium, Lactobacillus plantarum, Lactobacillus acidophilus, y Lactobacillus casei o Lactobacillus rhamnosus o ambos Lactobacillus casei y Lactobacillus rhamnosus
