Diet plays a central role in your dog’s overall health and well-being, and it stands to reason that you want to provide your dog the best possible source of nutrition in the dog food you choose. But some nutrients, like L-Carnitine, may be unfamiliar or completely foreign. Learn more about this vitamin-like compound and how it can help your dog maintain a healthy weight.
Carnitine, or L-carnitine, is a vitamin-like compound made in the body from amino acids. It's found naturally only in animal-based protein sources. It has been used to help with fat metabolism in other species, and recent scientific studies show that it can help reduce weight in overweight dogs.
This water-soluble substance attaches to fatty acids, transporting them into cellular mitochondria, the part of the cell that converts fat into a usable form of energy. There, they are broken down through oxidation and converted to energy for all tissues, including the heart, liver, and skeletal muscles. Through this process, carnitine helps reduce the storage of body fat and the amount of fat in the bloodstream.
In a study conducted by The IAMS™ Company, overweight dogs were fed similar diets. One group was given a diet supplemented with L-carnitine while another group received a diet without supplemental L-carnitine.
After seven weeks, the group that received the diet without supplemental L-carnitine lost 1.8% body weight compared to 6.4% body weight loss from the group that was fed the L-carnitine supplemented diet. Likewise, body fat was reduced in each group by 2.4% and 4.6%, respectively.1 The study found that L-carnitine promotes loss of body weight and body fat in overweight dogs.
IAMS™ ProActive Health™ Adult Healthy Weight is formulated with L-carnitine that helps turn fat into energy, providing a path to help keep him fit for life.
1 Sunvold GD, Tetrick MA, Davenport GM, Bouchard GF. 'Carnitine supplementation promotes weight loss and decreased adiposity in the canine.' Proceedings of the XXIII World Small Animal Veterinary Association. p. 746. October, 1998.

Between 25 and 40% of dogs are overweight, but often, owners don't know it until they take their dog to the veterinarian for another reason. Yet, even veterinarians can't tell if a dog is fat just by its weight. Ideal weight varies by breed, and quite widely within breeds. There's no ideal weight chart for all dogs!
You can judge your dog's condition by placing your hands on each side of his rib cage. Are the ribs protruding? Your dog may be too thin. Can you feel individual ribs easily, and is your dog's abdomen slightly tucked up when viewed from the side? That's the sign of ideal weight. If you can't feel the ribs easily, your dog has no waist, and his abdomen drags, he's too fat. Your veterinarian can help you further evaluate your dog's weight.
Before beginning any weight loss program with your dog, discuss it with your veterinarian.
You can begin your dog's weight-loss program by reducing caloric intake by 25% of his maintenance intake, and then decrease it by 10% increments every two to three weeks until a 1% weight loss per week is achieved. This means that, if your dog weighs 15 pounds, a 1% loss would be about 2-1/2 ounces.
If you feed one large meal a day or keep food available at all times, try dividing the daily ration into several small meals (at least two meals a day) and pick up what has not been eaten 30 minutes after each meal.
Dogs gain weight for the same reason that people do—they eat more calories than they use. Today's dogs share another problem with their parents: lack of activity. Most parents are gone all day and come home too tired to play with the dog.
Also, as dogs age, or after they are spayed or neutered, their metabolism might slow causing them to require less food.
Another reason for weight gain is frequent, high-calorie treats. Sometimes, more than one family member is feeding the dog, and the dog sure isn't telling!
Losing weight isn't easy. Changing habits is the key. Here are some ways you can help:
Determine who feeds the dog what and when. (Don't be embarrassed to admit you give your dog treats. Dogs are expert beggars.)
Substitute affection for treats. Give a pat or throw a ball when he noses your hand.
Take your dog for a walk more often. Even 10 minutes a day can help.
Feed him more often. It takes energy to digest food. Dividing your dog's daily ration into two or three feedings will help.
Reducing your dog's regular food amount by 25% should bring results.
If your dog is more than 15% overweight, your veterinarian might recommend a special food. Diet foods should be low in fat (under 20% of calories from fat).
Your goal is to help your dog be healthier, so select his food carefully. Some diet foods just add fiber to help the dog feel full. This can result in reduced digestibility, large stool volume, frequent trips to the backyard, and decreased skin and coat condition because the dog isn't getting enough fat and nutrients.
Find a food, such as IAMS™ ProActive Health™ Adult Healthy Weight, that has normal fiber levels to keep your dog's digestive system working properly. It should have high-quality protein so your dog doesn't lose muscle tone and essential fatty acids to help keep his skin flexible and coat glossy throughout the dieting process. After your dog reaches ideal weight, select a maintenance food to keep weight steady.'