My boss (head vet) won't use this drug yet.

First of all they started advertising to the public before they started informing vets about it. Just another way they try to get the client to badger the vet into buying their products.

Second my boss never is the first to jump on any bandwagon of a new drug. He prefers to let others use their client's pets as guinea pigs (eg. Proheart 6) and make sure it's safe for his clients first.

Third it still requires people to monitor their animal's food intake and reduce appropriately. Many of our clients refuse to do what is necessary to reduce the weight of their pet despite the possible health concequences.

Just my two cents worth.