This shocking ingredient used to help soothe infants to sleep! See more in this scene from Season 1, Episode 3, "Mad Medicine." Watch all new episodes of Hazardous History on Sundays at 10/9c, and stay up to date on all of your favorite The HISTORY Channel shows at history.com/schedule. #HISTORY
8:09
9:26
50:34
10:00
158:38
10:43
33:39
27:38
9:41
17:13
5:14
36:30
9:11
20:56
8:06
236:55
18:52
30:14
25:02
8:32