I'm really happy about this Annatrol. I’m religiously using the collagen, and overall I just trust that the product is a good product. So, I'm not worried about, you know, you go out, and you can buy supplements, and you don't know what you're getting because it's not regulated. It's true. But, when I take these, I feel like I'm getting very good quality, and I don't at all. I don't have any concern about that. So, if you've got issues, you want to take care of your bones, this is the way to go. Don't be going somewhere to some of the health food store or places that you think is cheaper, and you get what you pay for.