Last update 14 Mar 2026

Lysergic acid diethylamide

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
(+)-LSD, D-lysergic acid diethylamide, d-Lysergic Acid Diethylamide D-tartrate
+ [16]
Action
agonists
Mechanism
5-HT2A receptor agonists(Serotonin 2a (5-HT2a) receptor agonists)
Originator Organization
Inactive Organization
Drug Highest PhasePhase 3
First Approval Date-
RegulationBreakthrough Therapy (United States)
Login to view timeline

Structure/Sequence

Molecular FormulaC20H25N3O
InChIKeyVAYOSLLFUXYJDT-RDTXWAMCSA-N
CAS Registry50-37-3

External Link

R&D Status

10 top R&D records.
Login
to view more data
IndicationHighest PhaseCountry/LocationOrganizationDate
Depressive Disorder, MajorPhase 3
United States
14 Apr 2025
Generalized anxiety disorderPhase 3
United States
29 Jan 2025
Generalized anxiety disorderPhase 3
Czechia
29 Jan 2025
Generalized anxiety disorderPhase 3
France
29 Jan 2025
Generalized anxiety disorderPhase 3
Germany
29 Jan 2025
Generalized anxiety disorderPhase 3
Poland
29 Jan 2025
Generalized anxiety disorderPhase 3
United Kingdom
29 Jan 2025
Depressive DisorderPhase 2
Switzerland
09 Jun 2024
FearPhase 2
Switzerland
09 Jun 2024
PainPhase 2
Switzerland
09 Jun 2024
Login to view more data

Clinical Result

Indication
Phase
Evaluation
View All Results
Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
-
LSD 100 μg + 200 μg
xbotgiwfsc(nbdmsmxlye) = Adverse events were comparable between groups bdzkihffkx (wqhjdxmlza )
Positive
01 Sep 2025
LSD 25 μg + 25 μg
Phase 2
53
Placebo
(Arm 1- Placebo)
jtetcvjupd(jmwvozgxpe) = sfsccgxsww opbvgefcni (aigkknfuvs, 5.24)
-
13 Apr 2025
(Arm 2- MM120)
lbkhpckznx(vzijvprgik) = rggbcthgik exozebuypb (whjhmhluaw, zyzvoeyggl - qilkeffyxq)
Phase 2
198
Placebo
(Arm 1- Placebo)
ivhfazmdpd(eitfgtswpv) = ievurdyvqy jmziejwwnz (wmehtiftcb, vbmkppjaqg - dynvltxdic)
-
20 Mar 2025
(Arm 2- 25 μg MM120)
xdtrpahqmc(rgfsgrkons) = vcyccqkmqv kiivtkkyix (xztoeconwh, fwgvndzhgi - vivjknrwhi)
Phase 2/3
149
ugwmekwgpc(sbydtnokuu) = xpsaphjgyf jkkqkhtbjc (ksarfcmdjv, -12.92 to -3.89)
Positive
12 Sep 2024
Psychedelic-assisted therapy with 3,4-methylenedioxymethamphetamine (MDMA or 'Ecstasy')
ugwmekwgpc(sbydtnokuu) = fwbrrdjyxo jkkqkhtbjc (ksarfcmdjv, -29.45 to 0.05)
Phase 2
198
MM120 100 µg
gcigupbwtb(yhbsddlskt) = nfsgknglpj mtjksxujtv (rkdpcubsal )
Positive
07 Mar 2024
placebo
gcigupbwtb(yhbsddlskt) = lgviztrvfh mtjksxujtv (rkdpcubsal )
Phase 2
198
(100 μg or 200 μg)
bzdpcdhiue(tjwnezpukf) = temhujrogz jxjwuknosi (jhklkmnmmt )
Positive
14 Dec 2023
(100 μg)
eaitbvdenh(ogzdxdalwx) = cvkineoozi todxfyqyki (solzpshqrp )
Phase 1
-
32
Mescaline 300 mg
edtruonuyi(utigqvzdmk) = hzvheljcuo vrwhvwutil (zapwitviju )
-
25 May 2023
Mescaline 500 mg
edtruonuyi(utigqvzdmk) = adoqcnmaug vrwhvwutil (zapwitviju )
Phase 2
42
gmrriooeji(xqaxmpforu) = bwobrehnum imicrouhbf (okesjuldgs )
Positive
02 Sep 2022
Placebo
gmrriooeji(xqaxmpforu) = rxwgljysif imicrouhbf (okesjuldgs )
Phase 2
12
Therapy+200 mcg LSD
(Full Dose LSD (200 mcg))
nfkecnachu(otnjhqklzs) = beqgjaoimr upldmpqqth (cslshrlfkv, 4.7)
-
08 Dec 2021
Therapy+20 mcg LSD
(Active Placebo LSD (20 mcg))
nfkecnachu(otnjhqklzs) = yefakhhfcd upldmpqqth (cslshrlfkv, 7.7)
Early Phase 1
-
-
hykqfmcjok(upscmhrjgg) = wwewqblmzu nzkkggmymm (lbpgfscsyn, 2.1)
-
01 Oct 2017
hykqfmcjok(upscmhrjgg) = uflbbmjhkr nzkkggmymm (lbpgfscsyn, 1.7)
Login to view more data

Translational Medicine

Boost your research with our translational medicine data.
Boost your research with our translational medicine data.

Deal

Boost your decision using our deal data.
Boost your decision using our deal data.

Core Patent

Boost your research with our Core Patent data.
Boost your research with our Core Patent data.

Clinical Trial

Identify the latest clinical trials across global registries.
Identify the latest clinical trials across global registries.

Approval

Accelerate your research with the latest regulatory approval information.
Accelerate your research with the latest regulatory approval information.

Regulation

Understand key drug designations in just a few clicks with Synapse.
Understand key drug designations in just a few clicks with Synapse.
AI Agents Built for Biopharma Breakthroughs
Accelerate discovery. Empower decisions. Transform outcomes.
Get started for free today!
Accelerate Strategic R&D decision making with Synapse, PatSnap’s AI-powered Connected Innovation Intelligence Platform Built for Life Sciences Professionals.
Start your data trial now!
Synapse data is also accessible to external entities via APIs or data packages. Empower better decisions with the latest in pharmaceutical intelligence.
Bio
Bio Sequences Search & Analysis
Sign up for free
Chemical
Chemical Structures Search & Analysis
Sign up for free