You asked about sodium with your Glucosamine Sulfate. Well I started out with that blend in a pill, and I started hurting so bad, I had to take Excedrin for the pain. I didn't need pain pills before. I thought, this is ridiculos and besides I'm on a durectic to take sodium out of my system and I'm adding to it with these pills. So I immediately bought a different brand `without` the sodium and Wow, what a difference. Me personally, I'd go get the Glucosamine Sulfate only, leave off the Chrondrotin, people are afraid of that, for it's not regulated overseas where it is purchased and since overseas is where the mad cow disease it, there is no quarantee the cow cartlidge is disease free. I read up on this before I attempted to buy it, and I saw that many people won't buy it for that reason. That reason was good enough for me. Besides, my doctor said.....Glucosamine Sulfate only. Hope this helps.