A long time ago, dogs were strictly meat eaters, but as time has gone by, we changed the dog. They used to live outside, but today my dog has his own bed and lives like a king. He can't stand to get his feet wet and actually eats carrots. If I can sneak Superfood in his food, Putter gets that, too. But he is not fond of Superfood and tries to "eat around it."
Try it on your Akita. I bet it will help her arthritis.