That won't stop many analysts from speculating that the real purpose of the Medco divestment is to create a massive war chest that Merck will use to buy new drugs--or perhaps to merge with another drug firm like Schering-Plough (nyse: SGP - news - people), with which it co-promotes several drugs, or Eli Lilly (nyse: LLY - news - people).
Moreover, insurance companies have raised the co-pays on prescription antihistamines since Schering-Plough (nyse: SGP - news - people ) began selling its Claritin over the counter.