Genzyme: The Renvela Launch Decision

Pharmaceutical company Genzyme has created a new drug, Renvela, which is a phosphate binder designed to be used primarily by patients with kidney failure. Renvela is a slightly different version of Genzyme's highly successful Renagel. Company executives must now decide how best to launch Renvela. Should it replace Renagel? Should it be a premium version of Renagel? Is it worth launching the product at all? The case appears rather simple on the surface, but the questions are challenging to work through.