Not sure if anyone else has had the luck we have with this product. Our cat has been on a diet for a while and is doing well. Our toughest challenge was getting him to exercise as his energy level went to zero with the reduced food levels. Since we started using these multivitamins he has had a lot more energy and is doing really well. It is 25% off now on Amazon. I had tried to find it in stores but apparently it is only available there. The product suggests two vitamins per day, but one seems to work fine for us. Has anyone else been using this?