Pure c4s for AS? Anybody????

I have a friend that recommends this Pure c4s stuff from eterna pure. She basically says it's a miracle drug. I have my doubts. It is also known as summit when being given to animals. It's chondroitin 4 sulfate, is from bovine instead of sea creatures, and as a lipid protective barrier around the enzymes to last until to intestine for full use of the drug. It's quite expensive! I'm wondering if anyone has heard of this and/or tried it? I also do turmeric curcumin, salmon oil, aloe Vera gel pills, flax seed and cinnamon for inflammation. Does anyone have info on if I should discontinue all of that in lieu of this C4S?
TIS