My puppy is having loose motion from the day we changed her food. It's been 5 days we changed it from pedigree to drools. But my other puppy is not facing this issue.

Hello. A change is food should always be gradual. Whenever you are planning to change food, start a few days earlier and mix new food with the older one and keep increasing the percentage over 7 to 10 days. If it isn’t done in this manner, most of the pups end up having gastric upsets. Give Digyton drops while changing diet. Keep roxy on pedigree for now, change it gradually after few days as mentioned above.