Dogs that are properly fed typically do not require dog nutritional supplements. They get whatever nutritional needs they have from the dog food that they are fed. There are dogs that may need dog nutritional supplements and these are dogs that have special needs. Older dogs may also need some nutritional supplements since their age might be a factor to their failing health.Giving your dog the right dog food is usually enough to cover their nutritional needs. If you have a new puppy, consult your vet regarding dog nutritional supplements or which dog food is more complete with the necessary vitamins and minerals.Elements of Dog Nutritional SupplementsCalcium and Phosphorous are some of the essential elements needed in dog nutritional supplements because these help older dogs and young puppies form and maintain good bones. Although, these should be given in moderation unless specified by the vet since too much of both elements are not god for your dog.Other dog nutritional supplements are potassium and sodium chlorate. Potassium and salt are needed as electrolyte elements for your dogs. Too much of these can cause a kidney malfunction so unless specified by your vet do not give too much.Microelements are needed for proper running of a good metabolism. This is needed by dogs with problems with excess weight. Zinc contributes to the synthesis of proteins and helps in making the dog’s fur and skin better. Dog nutritional supplements with zinc should be given only to dogs that need it since some dog food already contains zinc.Iron is an essential element in dog nutritional supplements because it helps combat anemia and is needed for proper blood circulation and distribution. Iodine may also be dog nutritional supplements because this helps alleviate with the bones and thyroid gland. Excessive iodine can result to hyperthyroidism.Other dog nutritional supplements that may be handy to have are cod liver oil and dogs multi-vitamins. Cod liver oil helps make the coat and skin of our dogs lustrous and healthy while multi-vitamins for dogs supply small doses of whatever element of vitamins that your dog might be lacking.Self prescribing or self medicating may be a dangerous practice because there are specific doses that depend on the sizes and weights of the dogs. Always remember to consult your vet regarding the appropriateness of vitamins or dog nutritional supplements.