That deflects pleas from parents wanting a quick Rx for their child's cold, but she's worried about pushback.

WSJ: In Health Law, Rx for Trouble

Some hope for Merck and Schering's sales may come from Impact Rx, a prescription data service that bases its predictions on the behavior of a select group of doctors who prescribe high volumes of drugs.

FORBES: Waiting For ENHANCE

Under the agreement, FMC will use DaVita Rx prescription drug services to fill and ship oral medications to its U.S. Medicare patients.

FORBES: Berkshire Hathaway Enlarges DaVita Stake as Company Expands