I don't even know what to vote for. I used to give Layla a liquid.. that bothered her tummy... so we are using a Canadian brand- was formulated originally for horses but was reformulated for dogs- ANYWAYS>. it's a powder and i'm pretty sure IT bothers her tummy... so i stopped. I want SO bad to try Cosequin but i just can't keep spending money on supplements that make her sick.. i swear i could open a second-hand pharmacy. Also- I have no way of knowing if they work.. layla shows not external symptoms- but i can pop her knee if i move her knee- her vet said she is stage 2. This is a large source of stress and anxiety in my life... thanks for letting me vent