DO YOU HAVE ANY INFO. ON THE NEW PRESCRIPTION DRUGS (MAY NOT BE RELEASED YET): ACTONEL &/OR RIDIDRONATE (pronounced readidronate). (side effects, effectiveness, when available ...) IS IT CORRECT THAT DIDROCAL may improve only BMD of the spine & IS IT CORRECT THAT FOSAMAX may improve BMD of both femoral neck and spine?? Fosamax vs Didrocal: side effects, effectiveness, difficulty taking..., cost etc.? THANK YOU.