Currently I am on Fosimax and a low dose Premarin patch, both prescribed by my Endocrinologist. No side effects from these medications. Unfortunately I have been on several other medications and had no improvement in my DEXA numbers ( I am unique and unusual). The last medication before Fosimax I was taking Evenity but had to stop due to side effects that I had. I have only been on Fosimax for 2 months.