Wow this is the first time I've seen a thread where the little ads at the bottom were actually dead useful...
Mine says 'Canine Arthritis Remedy'
You may as well take that. Although the dog version is unregulated, so you might be getting baking powder. Probably just as good though - and less likely to fuck with your insulin intake than glucosamine.
I don't get why you'd waste money on something that doesn't absolutely bugger all! I really should make a living selling sugar pills, but I'm not immoral enough. Now, penis enlargement pills - there's a thought...