If we didn't feed the salmon food I would use the salmon oil as it's really great for the coat. But we feed this because all the dogs literally drool when it's meal time. Even after a year of feeding the same food they all dance and run to the door to the garage and then I have drips of drool on the floor I have to clean up from all the drool! It's funny. Even the baby who is eating the blue wilderness puppy chicken formula wants the SALMON. We will switch him to the salmon once he hits a year. 
I don't give any supplements. We feed a salmon based food which has the supplements already in the food.
Here is some info on the food we feed.
I feed the blue brand because of all the great ingredients in it....Deboned Salmon, Chicken Meal, Menhaden Fish Meal (source of Omega 3 Fatty Acids), Peas, Tapioca Starch, Chicken Fat (preserved with Mixed Tocopherols and Citric Acid), Flaxseed (source of Omega 3 and 6 Fatty Acids), Natural Chicken Flavor, Tomato Pomace (source of Lycopene), Potatoes, Alfalfa Meal, Potato Starch, Whole Carrots, Whole Sweet Potatoes, Blueberries, Cranberries, Apples, Blackberries, Pomegranate, Spinach, Pumpkin, Barley Grass, Dried Parsley, Dried Kelp, Taurine, Yucca Schidigera Extract, L-Carnitine, L-Lysine, Turmeric, Oil of Rosemary, Beta Carotene, Vitamin A Supplement, Thiamine Mononitrate (Vitamin B1), Riboflavin (Vitamin B2), Niacin (Vitamin B3), d-Calcium Pantothenate (Vitamin B5), Pyridoxine Hydrochloride (Vitamin B6), Biotin (Vitamin B7), Folic Acid (Vitamin B9), Vitamin B12 Supplement, Calcium Ascorbate (source of Vitamin C), Vitamin D3 Supplement, Vitamin E Supplement, Iron Amino Acid Chelate, Zinc Amino Acid Chelate, Manganese Amino Acid Chelate, Copper Amino Acid Chelate, Choline Chloride, Sodium Selenite, Calcium Iodate, Salt, Caramel, Potassium Chloride, Dried Yeast (source of Saccharomyces cerevisiae), Dried Lactobacillus acidophilus fermentation product, Dried Bacillus subtilis fermentation product, Dried Enterococcus faecium fermentation product.
PLUS they have the The Health Benefits of LifeSource Bits
LifeSource Bits include ingredients that help benefit dogs and cats in three ways.
Help dogs and cats maintain a healthy oxidative balance
Virtually every day, our dogs and cats are exposed to environmental factors that can negatively impact their oxidative balance. And if their biological systems are not able to rebalance this oxidative stress, it can lead to cellular destruction and other serious health issues.
As antioxidants can play an important role in reducing oxidative stress, an increasing number of veterinarians are recognizing their importance in helping pets maintain a healthy oxidative balance. This is the science that led our nutritionists to formulate BLUE's LifeSource Bits with ingredients that are rich in antioxidants. These include:
Kelp
Vitamin E
Vitamin C
Beta Carotene
Vitamin A
Blueberries
Barley Grass
Help support a pet's immune system.
LifeSource Bits contain ingredients that help support a pet’s immune system:
Alfalfa
Flaxseed
Parsley
Vitamin C
Cranberries
Help support a pet’s specific life stage requirements.
LifeSource Bits also contain ingredients that can help protect a pet’s changing needs from youth through his mature years. These include:
Omega 3 and Omega 6 Fatty Acids for healthy skin and coat
Yucca Schidigera Extract for joint health
Taurine for healthy eyes and heart
L-Lysine for growth and development
Vitamin D for healthy bones and tissue
Vitamin B12 for growth
L-Carnitine for endurance and fat metabolism
“Cold-Formed” Process
Recognized as a breakthrough in canine and feline health because of the multiple benefits they provide, LifeSource Bits are also a manufacturing breakthrough because they are “cold-formed” to preserve nutritional potency of the ingredients. BLUE is the ONLY brand of pet food to use this “cold-formed” process.
When you compare dog foods or compare cat foods, you will see that this “cold-formed” process is an important difference between BLUE and other brands that add antioxidants and vitamins. Other manufacturers process their foods with heat as high as 350°. High heat can destroy the potency of many vitamins, minerals, antioxidants and important enzymes. It’s the same concept as when you cook vegetables at high heat—the longer you do, the more heat-sensitive nutrients are lost.
LifeSource Bits are manufactured separately at a lower temperature from the rest of our kibble to preserve greater potency of the vitamins and antioxidants. This way, your pet can gain as many benefits as possible from these valuable nutrients.
Water-soluble vitamins are the most sensitive to heat. Nutritionists estimate that these vitamins can lose a minimum of 30% of their potency when exposed to high temperatures, while some, like vitamin C, can lose up to 75% of their potency.
BLUE LifeSource Bits contain eight water-soluble vitamins which benefit most from the “cold-formed” process:
Vitamin B1 (Thiamin)
Vitamin B2 (Riboflavin)
Vitamin B12
Vitamin C
Folic Acid B9
Niacin B3
Biotin B7
Pantothenic Acid B5
I really like the food and after going through 5 different foods with Oliver I won't change the boys. I like the Blue. It works for my family.
