I use esther-c but not for the benefit that you can get to your bones. I take it for the delicate tissue around the eye area. I have constant dark areas due to allergies and basically a hard life.
I asked my pharmacist to help me find something that would help in that area. He told me that esther c is absorbed better and will benefit the production of collagen. He also mentioned that it would help somewhat with my arthritis. I take * so there are no other additives and this might make a difference (I dunno).
Thats just my two cents worth.
The Bard of Ohio