I'm pretty sure that Jell-O is made of pig skin, and not cartilage.
Generally, it's not something you want to tell anybody while they are eating it.

I am happy to see that the Glucosamine is working for so many. I am going to recommend that my cousin try it, as she is only 31, and has severe back pain to the point to where she has to take morphine twice a day.
Thanks for the posts on it!