What is the life time infusion limit of Reclast? i keep getting conflicting messages on the life time limit of Reclast and also the life time limits of some of these others. There appears to be variation when you stop one and then restart it again after a lapse? What are the allowable lapses?

I have also heard that ReClast is equally effective if given every 18 months and not every year. What does this increased spacing do to lifetime limits?