Had a colonscopy last year for constant diarrhoea come back completely normal. got diagnosed with ibs. sometimes as soon as 5 minutes after eating a large meal il run to the toilet and its watery diarrhoea. is this still ibs?

Diarrhea: It could be part of your IBS but you also are dealing with an exaggerated gastrocolic reflex where as a meal enters your stomach it sets off too vigorous peristaltic waves all the way down your intestinal tract into the rectum. We all have mild versions of the gastrocolic reflex. To prevent your symptoms, taking an antispasmodic medication like dicyclomine 1/2 hour before the meal helps