Gold Label Unisex's GLD0660 Bute Free Gold, Clear, 1 Litre

My large elderly dog (rottweiler Akita cross) takes just over 5ml of this a day in her food and it's transformed her agility. She's still old and a bit slow, but displays far less discomfort, and gets up and down with far less difficulty. Much better value than dog specific solutions, and contains the same natural ingredients.