
The difference between the vets & the 'human' glucosamine is that the stuff from the vets is Glucosamine HCL and most 'human' glucosamine is Glucosamin Sulphate.
The Glucosamine HCL is more effective.
My pup has elbow displasia and the Glucosamine suppliment I have him on (human suppliment) is fantastic, its has made a huge difference to his walking :) It contains both the gluc.sulphate & gluc HCL at a combined rate of 1250g. It also contains Chondroitin.
I'm not sure if its Ok to put a link to it??