As my 2 large labs reached middle age they gained a tremendous amount of weight in less than a year. It turned out that our neighbors were loving them to death with table scrap goodies. We provided the neighbors with some lo-cal treats and put the dogs on a leading brand of "weight loss" dog food. Eventually, we tried umpteen different brands but the dogs either hated the taste or they were always hungry. After spending a day online, comparing nutrition values of various brands, I decided to try Purina ProPlan. The fact that they had a Large Breed Weight Loss formula was a deciding factor. Our male lab is a rescue dog and he's huge and put together all wrong and I really wanted something that would enhance joint health too.
Purina ProPlan Large Breed Weight Loss was the perfect formulation for both of our big, fat labs. They both lost the weight in less than a year without any sense of being deprived. They love the taste and we've seen an improvement in coat health. Both are more active and agile.
As a side benefit, I use this food as a treat for our medium dog. She loves the taste and thinks she's hot stuff when she gets a piece of the big kids food.

Pros: great taste, filling, total nutrition, healthy weight loss

Cons: none

great product to help your large breed dog lose some weight. When used correctly (no table scraps, low on the treats), a considerable amount of weight can be taken off, and maintained.

Pros: perfect for large breed dogs

Cons: none