I would hesitate on perscription foods. They are not good for your pup. It's all corn and byproducts. Our vet does not use them at all since there are typically healthier solutions out there than anything Science Diet or Royal Canin can do. I would do a good grain free food or raw diet. If you do grain free try adding some pumpkin to help firm up her stool. Raw meatly bones can firm up stool as well. Also, probiotics only work if they are kept cold and alive. So try a good greek yogurt with lots of active probiotic cells. I love Grek Gods brand full fat greek yogurt. GL!
Have you tried a food that is not grain free? My pem cannot handle grain free foods, they are too rich for him and he gets super soft poos and the runs. Not fun. Not all grains are bad!
Thank you Andrea, I'm going to probably start adding some yogurt to her bland food before I go back to a kibble.
Jane - I'm considering a non-grain free food this time too. Our first corgi I suspect has a wheat allergy (we noticed he had considerable scratching throughout the night when he would get into bread that my mom threw out for the birds when we were living with her. This happened too many times for coincidence. So he is on grain free now). She seems to be doing better now that all the meds are out of her system, so hopefully we can try a kibble again and not have to do prescription food.
I suspect she just needs some time to recolonize the good bacteria in her gut. A small amount of people food such as the yogurt, a little meat, pumpkin, cottage cheese, a teaspoon of olive oil, etc will help do that. Alternate whatever you have to add and give a it good month at least. I would try to ignore the soft stool and not go the prescription diet route.