I highly recommend Nuvet vitamins for those that want the very best for their pets.  Human grade, sourced in the US , made in the US. No fillers, no sugar, just pure nutrition. Boost your dogs immune system and give them everything they could need to live healthy and happy.  Each bottle is a 90 day supply so works out to about $20 a month and worth every penny.  They have a wonderful joint supplement as well.  I personally use the powder as I find it easy to sprinkle over food but they love the wafers too. 

Make sure you pick up the stain and odor remover if you have a new pup!   

The code to order is 111078

https://www.nuvet.com/products.html