| 2026-06-09 | Acid |
| 2026-05-31 | Acid |
| 2026-04-26 | Trip strip |
| 2026-03-25 | Microdosing drug |
| 2026-03-18 | It may be taken at the start of a trip |
| 2026-02-23 | Counterculture drug, in brief |
| 2026-01-29 | Trippy stuff |
| 2025-12-18 | Microdosing drug |
| 2025-12-08 | Psychedelic tab |
| 2025-12-03 | Drug featured in "How to Change Your Mind" |
| 2025-11-08 | The F.D.A. approved a form of this to treat anxiety in 2024, for short |
| 2025-10-04 | Source of some flashbacks |
| 2025-09-27 | Drug discussed in Aldous Huxley's "Heaven and Hell" |
| 2025-09-24 | Tabs with psychedelic properties |
| 2025-09-11 | Microdosing substance |
| 2025-09-10 | Alternative to mushrooms |
| 2025-06-30 | Timothy Leary's drug of choice |
| 2025-06-06 | Means of taking a trip |
| 2025-04-11 | Dose of unreality? |
| 2025-03-20 | Alternative to mushrooms, maybe |
| 2025-03-16 | Drug sold in 77-Across |
| 2025-01-28 | It's taken to start a trip |
| 2025-01-24 | "The Psychedelic Reader" subj. |
| 2025-01-10 | It might change your perspective |
| 2024-10-06 | Steve Jobs called it "one of the two or three most important things I have done in my life" |
| 2024-09-29 | Drug whose therapeutic value to alcoholics was advocated by A.A. co-founder Bill W. |
| 2024-08-13 | Mind-altering drug |
| 2024-08-04 | Purported influence on the lyrics of "I Am the Walrus" |
| 2024-08-02 | Alt tab? |
| 2024-07-10 | Drug that's "dropped" |
| 2024-06-06 | Acid |
| 2024-06-04 | Drug whose name can be found in "spells danger" |
| 2024-05-05 | Microdosing drug |
| 2024-03-27 | Timothy Leary's study |
| 2024-02-18 | Subject of 1960s-‘70s addiction research |
| 2024-02-15 | "Windowpane" |
| 2024-01-02 | It might cause someone to trip |
| 2023-12-11 | Acid |
| 2023-12-02 | Stuff in microdots |
| 2023-11-21 | Drug studied by Timothy Leary |
| 2023-10-25 | Drug that's "dropped" |
| 2023-10-11 | Alternative to mushrooms |
| 2023-09-22 | It's mind-altering |
| 2023-08-26 | This might change your mind |
| 2023-06-06 | Trippy drug |
| 2023-03-19 | Supposed influence on Pink Floyd's "The Piper at the Gates of Dawn" |
| 2023-03-18 | Inits. for a trip |
| 2023-03-16 | Psychopharmacology inits. |
| 2022-11-28 | Acid that's "dropped" |
| 2022-10-12 | Inspiration for some psychedelic music |
| 2022-08-11 | Tab for a trip |
| 2022-07-10 | Drug that can be microdosed |
| 2022-06-14 | "Acid" |
| 2022-06-01 | Psilocybin alternative, for short |
| 2022-05-29 | Tab inits. |
| 2022-03-14 | Psychedelic inits. |
| 2022-03-13 | Letters that might change your mind? |
| 2022-01-28 | Some trip on it |
| 2021-12-25 | Subject of some MK-Ultra experiments |
| 2021-12-21 | It may give you visuals |
| 2021-12-15 | Subject of Netflix's "Have a Good Trip" |
| 2021-12-13 | Psychedelic substance |
| 2021-11-24 | Drug in the 1980 film "Altered States" |
| 2021-10-28 | What the D.E.A. might keep tabs on? |
| 2021-09-25 | Drug known by its German initials |
| 2021-08-12 | It was once sold medically under the commercial name Delysid |
| 2021-06-03 | Inits. for a trip |
| 2021-05-18 | Trippy drug |
| 2021-04-02 | Colorless, odorless drug |
| 2021-03-08 | '60s hallucinogenic |
| 2021-01-22 | Cause of a trip |
| 2020-12-15 | "Acid" |
| 2020-12-10 | What "Lucy in the Sky With Diamonds" supposedly isn't about |
| 2020-11-27 | Alternative to mushrooms |
| 2020-11-11 | Inspiration for the Beatles' "Day Tripper" |
| 2020-09-23 | It's dropped before a trip |
| 2020-09-20 | Counterculture drug, for short |
| 2020-07-01 | Start of a trip, for short? |
| 2020-05-22 | Tab that's paid for illegally? |
| 2020-04-06 | Drug to trip on |
| 2020-01-28 | You'll trip if you drop it |
| 2020-01-21 | Hit from the '60s? |
| 2019-09-11 | Acid |
| 2019-09-03 | You can take a trip with this without traveling |
| 2019-07-18 | Pitcher Dock Ellis claimed to have used this before throwing a no-hitter in 1970 |
| 2019-06-29 | Inspiration for Jefferson Airplane's "White Rabbit" |
| 2019-02-18 | '60s hallucinogenic |
| 2019-01-03 | Subject of many '60s hits? |
| 2018-12-10 | Timothy Leary's drug |
| 2018-08-14 | Trippy drug |
| 2018-07-21 | Cause of some flashbacks, for short |
| 2018-06-17 | Subj. of "The Electric Kool-Aid Acid Test" |
| 2018-06-04 | Trippy drug |
| 2018-02-28 | Subject of a repeated warning at Woodstock |
| 2018-01-23 | Subtext of Jefferson Airplane's "White Rabbit" |
| 2017-12-13 | Drug taken in tabs |
| 2017-11-27 | Trip inducer, in brief |
| 2017-11-09 | Acid |
| 2017-11-06 | Psychedelic drug, briefly |
| 2017-10-25 | Drug referenced in "The Joyous Cosmology" |
| 2017-09-11 | The drug acid, by another name |
| 2017-08-06 | Deadhead's hits? |
| 2017-07-29 | Stuff "tested" in the 1960s' Acid Tests |
| 2017-06-02 | So-called "battery acid" |
| 2017-04-24 | It was often dropped in the '60s |
| 2017-02-14 | "Acid" |
| 2016-11-19 | Something taken in preparation for a trip |
| 2016-10-25 | Drug for Timothy Leary |
| 2016-09-19 | Drug for tripping |
| 2016-09-11 | Acid |
| 2016-09-10 | "Tabs" |
| 2016-07-28 | Subtext of Jefferson Airplane's "White Rabbit" |
| 2016-03-31 | It might be taken before a trip |
| 2016-03-21 | Psychedelic drug |
| 2016-01-10 | Acid |
| 2015-12-15 | Hallucination producer |
| 2015-11-02 | '60s trip inducer |
| 2015-07-11 | Hit from the '60s? |
| 2015-05-27 | Drug ingested in "Easy Rider" |
| 2015-04-23 | Trip cause |
| 2015-04-18 | Some dropped tabs |
| 2015-04-15 | C20H25N3O, commonly |
| 2015-02-02 | "Turn on, tune in, drop out" drug |
| 2015-01-04 | You can trip on it |
| 2014-11-11 | Acid |
| 2014-10-26 | Drug sold in microdots |
| 2014-10-16 | "Fear and Loathing in Las Vegas" drug |
| 2014-10-12 | Subject of some '50s-'60s experiments |
| 2014-08-14 | Flashback cause, maybe |
| 2014-08-13 | Something to trip on |
| 2014-07-15 | One may trip on it |
| 2014-06-03 | Acid |
| 2014-05-26 | It was dropped at Woodstock |
| 2014-02-14 | Agent of psychedelic therapy |
| 2013-12-01 | "Purple haze" |
| 2013-11-21 | Acid |
| 2013-11-03 | Psychedelic drug |
| 2013-10-17 | Trip inits. |
| 2013-09-11 | "The Joyous Cosmology" subj. |
| 2013-08-17 | Means of changing one's mind |
| 2013-07-07 | The U.S. banned it in 1968 |
| 2013-06-04 | It may be dropped when one trips |
| 2013-05-12 | Cause of a trip |
| 2013-04-23 | Something you might trip on |
| 2012-11-28 | "Dropped" drug |
| 2012-11-05 | "Lucy in the Sky With Diamonds" subject, supposedly |
| 2012-10-05 | Hits from the 1960s? |
| 2012-07-15 | Acid |
| 2012-07-08 | Acid |
| 2012-06-16 | Alternative to mushrooms |
| 2012-04-08 | Onetime aid in psychotherapy |
| 2012-01-30 | '60s "acid" |
| 2012-01-29 | It was dropped at Woodstock |
| 2012-01-27 | 54-Down for a trip |
| 2012-01-05 | Acid |
| 2011-12-06 | What the "turn on" part refers to in "Tune in, turn on, drop out" |
| 2011-04-12 | "Dropped" drug |
| 2011-03-15 | Trip producer |
| 2011-03-13 | Acid |
| 2011-03-06 | "Turn On, Tune In, Drop Out" subject |
| 2011-02-01 | Timothy Leary's turn-on |
| 2010-09-22 | It was dropped in the '60s |
| 2010-09-17 | Subj. in "The Electric Kool-Aid Acid Test" |
| 2010-09-02 | Much-discussed initials of a 1967 Beatles song |
| 2010-06-11 | Trip vehicle? |
| 2010-04-18 | Trip preparation |
| 2010-01-04 | '60s hallucinogen |
| 2009-12-17 | Subject of "Hofmann's Potion" |
| 2009-12-15 | Tripper's turn-on |
| 2009-10-20 | Drug sold on blotting paper |
| 2009-10-04 | Deadhead's supply |
| 2009-09-14 | '60s hallucinogen |
| 2009-07-07 | Source of a hippie's high |
| 2008-12-18 | Cause of tripping? |
| 2008-10-06 | Psychedelic drug |
| 2008-09-24 | Trip provider? |
| 2008-06-11 | One may trip on it |
| 2007-09-21 | It'll change your mind |
| 2007-08-14 | Psychedelic drug |
| 2007-07-01 | A hallucinogen |
| 2007-04-25 | A hallucinogen |
| 2006-10-22 | Drug once available under the commercial name Delysid |
| 2006-09-24 | What "Lucy in the Sky With Diamonds" may or may not be about |
| 2006-04-16 | Dropped stuff |
| 2005-12-22 | Hallucinogen |
| 2005-11-22 | Psychedelic of the 60's |
| 2005-11-20 | Narc's haul |
| 2005-11-05 | The U.S. banned it in 1967 |
| 2005-04-09 | Trip producer |
| 2005-01-31 | Acid, in the 60's |
| 2005-01-29 | Subject of some of 32-Down's writings |
| 2004-09-15 | 60's trip cause |
| 2004-08-11 | Cause of many trips, once |
| 2004-05-17 | "Acid" |
| 2004-02-11 | Something that's illegal to drop |
| 2004-01-26 | It made Leary bleary |
| 2004-01-19 | "Acid" |
| 2004-01-15 | ... |
| 2003-11-26 | Tripper's buy |
| 2003-10-24 | Source of some strange visions |
| 2003-09-24 | Acid |
| 2003-08-07 | It's taken for a trip |
| 2003-08-05 | It was dropped in the 60's |
| 2003-02-02 | It was dropped in the 60's |
| 2002-12-08 | Acid |
| 2002-09-24 | Timothy Leary's turn-on |
| 2002-07-30 | 60's turn-on |
| 2002-05-30 | Flashback causer |
| 2002-05-09 | It was dropped in the 60's |
| 2002-03-23 | Trip producer |
| 2001-10-21 | It can have you seeing things |
| 2001-06-10 | It's dropped on trips |
| 2001-05-10 | What Leary tripped on |
| 2001-02-10 | Trip-taker's aid, perhaps |
| 2000-12-16 | Trip starter |
| 2000-10-30 | Hallucinogen |
| 2000-05-05 | Trip inducer |
| 2000-04-26 | Kind of trip |
| 2000-03-29 | Acid |
| 2000-02-23 | It might make you see things |
| 1999-12-29 | Kind of trip |
| 1999-12-10 | Narc's find, perhaps |
| 1999-05-17 | It'll make you see things |
| 1998-11-15 | It may make you see things |
| 1998-10-25 | A turn-on |
| 1998-10-13 | Hallucination cause |
| 1998-10-07 | Woodstock supply |
| 1998-09-29 | Tripper's turn-on |
| 1998-09-02 | Trip promoter? |
| 1998-08-25 | "Acid" |
| 1998-08-21 | Kind of trip |
| 1998-08-02 | Certain turn-on |
| 1998-03-22 | What Leary tripped on |
| 1997-08-01 | Trip instigator |
| 1997-06-13 | It was dropped in the 60's |
| 1996-05-26 | Trip starter |
| 1996-03-08 | Illegal manufacture |
| 1995-12-21 | Kind of trip |
| 1995-10-08 | Bit of psychedelia |
| 1995-08-27 | Acid |
| 1995-07-26 | Acid |
| 1995-06-24 | 60's turn-on |
| 1995-06-07 | C20-H25-N3-0 |
| 1994-09-22 | Acid |