Hi. a friend of mine had this for l8 yrs. I have also had it for llYrs. with no help from medication (only upset stomach). The new study shows that Vitamin D helps, my friend is no longer wearing braces on her legs. I passed this on to my Dr. so he started me on it 2wks ago. It is worth checking into seeing it is only a vitamin. Good luck and maybe you should give it a try.