Hi I work at a pet store and have a hand full of customers with Shih Tzu’s.
If your dog has a sensitive stomach I would recommend adding goat’s milk (a universal milk) into your dogs diet. This will not only aid in digestion but also add hydration too! Some brands even added spices into the goat milk for added benefits.
If not goat’s milk I would encourage you to find a good probiotic powder for your dog. This will help with the sensitivity of your dogs stomach.
Merrick is good brand and Duck is a cooling protein (this will help with any inflammation). I would recommend after 2 months switching through Merrick’s formulas to help your dog become accustomed to other proteins and amino acids.
Other brands that are high in protein and low in carb (easier to digest) are Zignature, Orijen, Farmina, Acana, and Essence.
If your dog has a sensitive stomach I would also try introducing freeze dried treats. These treats are a lot easier to digest than biscuit treats. I only give my dogs freeze-dried raw treats.
