Two indoor cats were already well-fed and sheltered, so it's hard to see any improvement. But the Nutra Thrive didn't hurt them.
On the other hand, an outdoor feral female who has dropped two litters since Spring 2019 (it's now October) has shown improved energy and appearance of weight gain after about two months of Nutra Thrive supplementation. Her kittens appear to be healthy and active on Nutra Thrive and a wet fish diet. The father's coat seems shinier and healthier as we all prepare for colder weather.
Bottom Line: Yes, I would recommend this to a friend
