Historical clue formulations

• Poison-treating plant — 2021-01-03
• Syrup of ___ — 2019-11-27
• Poison victim's remedy — 2017-05-14
• Drug used in aversion therapy — 2014-11-08
• Drug for a poisoning victim — 2010-03-10
• Drug used to treat poisoning — 2009-05-04
• Syrup of ___ — 2007-11-30
• Syrup of ___ — 2006-03-08
• Syrup in the medicine cabinet — 2004-07-25
• Medicinal syrup — 2003-06-11
• Drug for a poison victim, maybe — 2002-12-22
• Emetic root — 2001-08-25
• Medicinal syrup — 1999-07-15
• Cough medicine ingredient — 1998-08-16
• Medicinal plant — 1997-06-21
• Poison remedy — 1996-09-19