Hyaluronic acid combined with aloe Vera juice (my understanding is that the aloe acts as a catalyst) is a great way to rehydrate joints very quickly. Of course, the whole food sources such as bone broths are best but if your having issues with joint dehydration which often manifests and cracking and popping and even weakness, it might be a good way to alleviate this in a quicker manner. I think broths should also be a component.
(Remember, if your making broths, to add apple cider vinegar at the start to help extract these nutrients)
I took it for 2 months following a hip surgery. I also took/still take lots of gelatine, glucosamine and chondroitin, so I don't know how much the hyaluronan helped. But my hair and nails grow like crazy :)
I also try to eat as much bone broth and tendons/joint cartilage as possible from real meat.
You get the stuff from bone broths that are made from joints. Knees are the easiest to get if going with beef I believe, but any articulating joint works. Great for the joints, if a deficiency is the problem.