My cat had vomiting issues since she was 2 months old (now she is 12 years old). Our then-veterinarian had recommended it to us; we saw some improvement in her condition but not excessively good. Recently, whatever she eats, she throws up. And no, it wasn't due to her age as we had taken her to the vet. It was the food! I don't know if the formula changed recently, but it's a shame. We found another one now and it's perfectly fine