I did for awhile unfortunately didn't do a lot for me. It works for my mom though she took the combo, Glucosamine Chondroitin. I put tiger balm on my knees and that helps.
I get it at Fred Meyer but any martial arts or health food store. It's for pain. I love the cinnamon version, but it can stain your clothes so watch out.
I bought some glucosamine with MSM, and it has that ingredient "c" word you guys mentioned. I will give it a try. I saw turmeric there and thought about it, next time I'm in the pharmacy I will try it. Thanks!