Getting the right osteoporosis medication depends on a lot of things: your health, your age, how advanced your osteoporosis is -- even your gender. So the medicine that's right for your sister or neighbor may not be right for you.
Also, when trying any medication, there's always a bit of trial and error. Unfortunately, your doctor can't always know which medicine will work best for you beforehand. Although it may be frustrating, you might need to try several different medicines until you find the right one.