Hiya sm,
I personally take Fosamax. I have taken steroids for years, which has caused osteo and this tablet is the only one, for me personally, that didn't cause severe gastric problems and inflammation. I take it once a week and have (or I should have) a chewable calcium tablet per day.
Whichever one you do have, please be very careful to follow the instructions on how to take it.
Hope this helps.
goldenwings