Sorry, the studies I found just reititerate above. I did find that altevia is much better absorbed than other biphosphonantes (most have about a 1% absorption. There was some concern about the high amounts of ECTA in the formulation, and the study ended with a comment that the ideal oral biphosphonate has yet to be developed. Also noted that most biphosphonates are generic. Altevia is not. So with most insurance companies will require a prior authorization. Wish I could have been more help