In a message dated 1/3/2003 10:41:37 AM Eastern Standard Time, [EMAIL PROTECTED] writes:
> When these products first came out one of my vets mentioned that it made no > sense to him that any of these supplements would be effective as he did not > believe they stayed in the GI system long enough to be absorbed. I don't know about absorption...but some of the academic papers I've read make a point of saying that their research was done using laboratory grade glucosamine or chondroitin sulfate and that they couldn't be sure the commercially available products would provide similar effects. -Sherri V.
