Was apprehensive ordering this, my cat was taking the previous formula that has since been discontinued months ago. When this came back in stock, i couldn't wait to try it! My cat is a fussy eater even with her snacks so imagine my surprise when i shook the bottle and in came my cat, running towards me. She remembered the sound of the vitamins rattling in the container! I am not sure if this improves my cat's health as she is already thriving with 100% raw meat diet. This makes a yummy snack for her, reduced from the previous 4 pills a day to 1 pill a day serving.