Vegetarian chondroitan

I've been able to get vegetarian glucosamine for years now, but not chondroitan. A company tried to develop it a few years ago, found it was too costly. There are now a couple of supplements that are supposed to be chemically similar to chondroitan and work similarly to it:

Mythocondro
Phytodroitin

Using glucosamine has brought me from having to use crutches and expecting to be headed for a hip tranplant, to ususally only having a low level of pain, which is still continuing to improve.