There are a handful of choices with respect to drugs for osteoporosis and, regrettably, none of them perfect or free of thought-provoking side effects and potential side effects. If there is one that does "make bones healthy" as the pharmacist mentioned, I've not heard of it. Unless she was referring to the few drugs that seem to trigger the growth of new bone?

I've wondered too why and how bisphosphonates can induce those longitudinal fractures of the femur (or osteonecrosis in rare cases for that matter). I suspect as you do that there's something else happening when old dead bone cells aren't being slouched off?