Evenity is for 12 months only. Once the new scans are reviewed (after a year of taking Evenity) the maintenance plan will then be discussed with Endocronologist.
In regards to the sulfa allgery. I had an allergic reaction to an antibiotic about 40 years ago. The Hydrochlorothiazide is a bit different than an antibiotic, so it may be ok to take, however I want to make sure before taking, that is why I have chosen to see an allergist first.