 
 <prompt> If one company wan introduce new heart medication, na qualified administration get final say thanks to which entity?? Given di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: The thalidomide wahala bring back Kefauver's bill wey dey enhance drug regulation wey don stop for Congress, and the Kefauver-Harris Amendment become law on 10 October 1962. Manufacturers from now on go need prove to FDA say their drugs dey effective as well as safe before dem fit enter US market. The FDA get power to regulate advertising of prescription drugs and to set good manufacturing practices. The law talk say all drugs wey enter market between 1938 and 1962 must be effective. An FDA - National Academy of Sciences study show say nearly 40 percent of these products no dey effective. Another study wey comprehensive of over-the-counter products start ten years later. 