Glucosamine has been big since mid 80's, but it was always shell fish based. For its price, it didnt do much for me, but some swear by it.
Veggie Glucosamine I never seen before until tonight.
Chondroitin is supposedly less effective than Glucosamine. Combining the two just t costs more.
MSM is another combo with this that, alone, does nothing for me. Funny 'cause its related to the liquid DMSO.