It's the first fact I've bought a product of Purina. Never really Regarded it as a prime mark of dog food. Anyway, I let my whippet eat every 2-3 months something else. He has been on it for 2 weeks already and so far so good. No stomach problems, the number of farts Stays The Same (LOL). Pro Plan is a good option while being sold with promo price. Recommended.