The author on the connective tissue disorder site recommends "making" one's own HA by using bones and other animal parts(all that contain cartilage,etc) to make a stock/broth and eating it everyday.
And HA DOES make collagen (hence the incredible skin noted on the villagers I talked about), but I don't know anything about hydrolyzed collagen... sounds very similar if not the same...where do you get it?