Historical clue formulations

• Non-pharmacological component of a clinical trial — 2025-10-29
• Component of many a trial — 2025-01-10
• Inactive pill, maybe — 2023-09-05
• "Medicine" that doesn't actually contain medicine — 2021-05-10
• Pill in experimental studies — 2021-03-09
• It should have no effect — 2013-07-14
• Test control — 2009-08-08
• Part of many a test — 2007-12-30
• Part of a test, maybe — 2001-04-01
• A person may be taken in by taking it — 1999-10-22