Number of unsuccessful Alzheimer’s drugs in development in the U.S. 1998-2017

This statistic shows the number Alzheimer’s drugs that were in development in the United States, but were ultimately unsuccessful from 1998 to 2017. In 2000, there were 13 Alzheimer's drugs in development in the United States that later proved to be unsuccessful.

本统计数据显示了1998年至2017年间，美国在研发过程中最终未能成功的阿尔茨海默病药物的数目。在2000年，美国共有13种阿尔茨海默病药物处于研发阶段，后经证实均未能取得成功。