What did some owners find when they switched *away* from grain-free formulas?

Answer

Switching away from grain-free formulas resolved their dog's digestive issues

Some owners reported that departing from grain-free food formulations actually corrected their dog's digestive complaints, suggesting that certain grain-free alternatives may contain other ingredients that cause irritation.

What did some owners find when they switched *away* from grain-free formulas?
healthDogVizslaStomachdigestive