JK, someone on another site I follow (called Prolia Side Effects on FB) mentioned that she is on slow release Actonel. It is a bisphosphonate in pill form and if it gives you any problems at least you can stop taking it. I still think I will have to go with Reclast. Eventhough Actonel is slow-release, still wonder about g.i. side effects. Plan to ask my endocrinologist about during June telephone appointment.