Our little girl is 10 years old and weighs 7lb. We give her a quarter of 1 mg every week . Other than that she gets a product called Leap Years crumbled up into her science diet soft food ( no teeth) 3 years ago she jumped out of our golf cart and hurt her hip , I did some research and ordered glucosamine for small dogs, which includes Chondroitin , I put a dropper over her chicken hears at least 4 times a week. She recovered within a few days from her injury and now she is running around like a 2 year old puppy
I hope this helps, ps her blood work is perfect