You should always strive to feed your dog with the highest-quality dog feed you can afford. In addition, consult with a vet to ensure the food contains all necessary elements. You can also add https://ukpetdrugs.co.uk/loxicom-1-5mg-ml-oral-suspension-for-dogs/ to your pet's ration to ensure he's always getting a necessary does of vitamins and elements. There's no harm in a genuine medication that will prevent your dog from developing potentially harmful health conditions.
Buy dry food only at trusted Metacam stores and, preferably, the whole package. If you have a small dog, and a large bag is too large for you, it is better to buy a smaller package, rather than a weighed feed of the same volume.