I've had to administer 2 sachets of picolax to my ds, one on Friday, tried yesterday but failed so senna & lactulose and another sachet today. He is/was very constipated. However, yesterday we had an episode of diaorrhea and today it's been virtually non-stop. Also 3 spoons of lactulose today thinking he wasn't going to take picolax. Is it possible for the picolax to turn his hard poo into mush or is the worst still to come?