Our vet is staff at the SPCA, stays current and is fairly open minded. When we asked about CBD, the vet cautioned us that little is known about cannabinoids and dogs, and that they just don't know if there are possible benefits and harms. The advice we received was "don't risk it, we just don't know"
Considering that CBD is good for many things, I have seen hucksters promising cures for everything from abscesses to zits. During my years in the health and nutrition industry, I saw the same thing over and over. They publish articles, full of pseudo science, and on the next page is an ad for their product. They cite studies "proving" benefits to humans, but fail to mention that they were animal studies.
So, I am not saying CBD isn't good for your pooch, I am saying that there are many unknowns and a LOT of misinformation out there.
Our 65lb dog gets about a gram of Turmeric every day. She doesn't like it, so it is mixed into some fat or included in bone broth. Seems to have reduced her inflammation significantly.