We have been giving our 13 year old dog Greenies Hip and Joint Care. After reading other reviews, I realized what I thought were old dog symptoms were actually caused by Greenies. Our dog experienced glazed over eyes, lethargic, not wanting to eat her food, sound sleep in a dark closet, bad breath, disoriented at times, and definitely addicted to them. Since we took her off of them she truly is a different dog. She is back to her happy and playful self chasing our other 2 dogs around. I don't know what's in them but it's as if we were drugging our dog. Please don't give these to your dog.