Yes, a supportive diet may be of benefit. This product is likely to be a very good option if your puppy’s symptoms are known or suspected to be caused by an adverse response to meat or grain. However, do be aware that there are many other causes of loose stools including over-feeding, picking up things to eat/drink outside, infection and medical problems. In such cases, addressing and treating the root cause is essential. Puppies with diarrhoea can dehydrate quickly, so do seek veterinary advice. If your puppy has had problems on another brand of food which was also fish and potato based, our regular Puppy/Junior (chicken and rice based) might be a better option if an adverse food reaction is suspected.