I purchased the Optimum Skin & Coat and the Ultimate Fitness and Health for my cat. I knew my cat's food didn't have all the nutrients she should be getting and after doing some research it seemed Dr. Bills had MANY more active ingredients than most of the other competitors (I didn't want to buy more filler stuff that wouldn't help). I have to say, I've been very impressed so far. My cat, Mia, is a picky eater and I thought the powder might be a little difficult to get her to eat. It took her about two days of it being mixed into her food (I was about to try making the broth the recommend) but she started eating it and it's been smooth since. I know vitamins and supplements are helpful but I've been very impressed with her skin, fur, and attitude since starting this up recently.
I love this product, more importantly, Jack, my landlords 18-year-old cat, does too! I started him on Dr Bills Feline Complete Joint Care on the advice of a friend, who is extremely knowledgeable about pet nutrition and supplements, when he started having trouble coming up and down the stairs. That made an amazing difference. My friend had also suggested the Feline Ultimate Fitness & Health which he gives to all his furry friends as soon as he gets them. Jack loves it and it has already made a significant improvement in his coat, alertness, and activity level. Thank you Dr Bills!