 
 <prompt> ```Di amendment wey become law for 1962 start as wetin? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context:``` <response>: The thalidomide wahala bring back Kefauver bill wey dey enhance drug regulation wey don dey hang 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 work well and dey safe before dem fit sell am for US market. FDA get power to control how dem dey advertise prescription drugs and to set good manufacturing practices. The law talk say all drugs wey dem introduce between 1938 and 1962 must dey work well. An FDA - National Academy of Sciences study show say nearly 40 percent of these products no dey work. Another study for over-the-counter products start ten years later. 