I use the whelping pudding and it does not bother them and I give them puppy food while they are pregnant It has not change their stool but every dog is different after giving birth and the eat the palacita the get a little loose stool the first day but then goes back to normal the whelping pudding I use is the one that got the knox gelatine in it if you need it let me know and I will post it for you they are many different whelping puddings just do search and you will find one |