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Pargy-LAD

Pargy-LAD molecule structurePargy-LAD molecule structure
Chemical Class

Pargy-LAD is a synthetic psychedelic of the lysergamide class closely related to LSD. It produces LSD-like psychedelic effects described as significantly less distinct. Its chemical structure differs from LSD by having a propynyl group in place of a methyl group.1 Pargy-LAD was developed by David E. Nichols and colleagues at Purdue University in the 1980s and was described in Alexander Shulgin’s 1997 book TiHKAL.

Dosage & Duration

Dosage

Doses are population estimates that vary widely between individuals.

Threshold50 µg
Light125-275 µg
Moderate275-500 µg
Strong500-700 µg
Heavy700+ µg

Duration

Onset30-45 minutes
Total6-8 hours

Subjective Effects

Subjective Effects not written up yet

Pharmacology

Pharmacodynamics

PARGY-LAD is thought to act as a partial agonist at 5-HT2A receptors, an action believed to underlie its psychedelic effects.

Pharmacokinetics

Absorption & half-lifenot documented yetMetabolitesnone documented yet

Interactions

Interactions not written up yet

An unlisted combination is an unknown one, not a safe one. Check a dedicated combination chart before mixing.

Check TripSit

Tolerance

Tolerance timelines are rules of thumb, not exact schedules, and vary widely between individuals and use patterns.

Full Tolerance
Tolerance to Pargy-LAD's effects develops almost immediately after ingestion.
Baseline Reset
Tolerance returns to baseline after approximately 14 days without further use.
Half Tolerance
Tolerance decreases to approximately half its initial level within 5–7 days without further use.
Cross Tolerance

All psychedelics

Harm Potential

Addiction & Dependence

Psychological

Extremely Low

Formal studies are lacking, but PARGY-LAD appears to have low habit-forming potential, with desire to use tending to decline after repeated administration.

Psychosis Risk

Lithium and psychedelic combinations may significantly increase psychosis risk, while cannabis and stimulants may increase adverse psychological reactions including anxiety, paranoia, panic attacks, and psychosis.

Seizure Risk

Lithium with psychedelics may significantly increase seizure risk, and tramadol may lower seizure threshold in susceptible individuals.

History & Culture

PARGY-LAD was developed by David E. Nichols and colleagues at Purdue University in the 1980s. Alexander Shulgin described it2 in his 1997 book TiHKAL (Tryptamines I Have Known and Loved).3…

Legality

International

PARGY-LAD is a legal grey-market alternative to LSD in research-chemical markets.

By Country

Illegal3
Germany flagGermanyIllegal (analog/blanket ban)
Latvia flagLatviaIllegal (analog/blanket ban)
United Kingdom flagUnited KingdomIllegal (analog/blanket ban)
Not scheduled1
Switzerland flagSwitzerlandNot scheduled

References

Citations

  1. Chemistry and Structure–Activity Relationships of Psychedelics. Springer chapter reproduced by Isomer Design (2017). https://doi.org/10.1007/7854_2017_4751
  2. TiHKAL: The Continuation — #51 PRO-LAD. Transform Press (copy hosted at chemistry.mdma.ch) (n.d.). https://chemistry.mdma.ch/hiveboard/picproxie_docs/000532880-Alexander_Shulgin_and_Ann_Shulgin_-_TiHKAL.pdf1
  3. TiHKAL (Tryptamines I Have Known and Loved): The Continuation. Transform Press (1997). https://transformpress.com/tihkal-tryptamines-i-have-known-and-loved-the-continuation/1
  4. Par Krimināllikuma spēkā stāšanās un piemērošanas kārtību — 2. pielikums, II nodaļas 11. punkta 21. apakšpunkts. likumi.lv (n.d.). https://likumi.lv/ta/id/50539-par-kriminallikuma-speka-stasanas-un-piemerosanas-kartibu1
  5. Narkotisko un psihotropo vielu un zāļu, kā arī prekursoru likumīgās aprites likums — 3. un 5. pants. likumi.lv (n.d.). https://likumi.lv/ta/id/40283-par-narkotisko-un-psihotropo-vielu-un-zalu-likumigas-aprites-kartibu1
  6. Ministru kabineta 2015. gada 26. maija noteikumi Nr. 256. likumi.lv (n.d.). https://likumi.lv/ta/id/274341-grozijumi-ministru-kabineta-2005gada-8novembra-noteikumos-nr847-noteikumi-par-latvija-kontrolejamajam-narkotiskajam-vielam-psihotropajam-vielam-un-prekursoriem1
  7. PubChem PUG REST — Pargy-lad, CID 139030999. pubchem.ncbi.nlm.nih.gov (n.d.). https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/139030999/property/IUPACName,Title,MolecularFormula,CanonicalSMILES,IsomericSMILES,InChIKey/JSON1
  8. Neue-psychoaktive-Stoffe-Gesetz (NpSG), Anlage 1. gesetze-im-internet.de (n.d.). https://www.gesetze-im-internet.de/npsg/anlage_1.html1
  9. NpSG - Neue-psychoaktive-Stoffe-Gesetz. gesetze-im-internet.de (n.d.). https://www.gesetze-im-internet.de/npsg/BJNR261510016.html1
  10. Bundesgesetzblatt Jahrgang 2019 Teil I Nr. 27 – Verordnung zur Änderung der Anlage des Neue-psychoaktive-Stoffe-Gesetzes und von Anlagen des Betäubungsmittelgesetzes. bgbl.de (n.d.). https://www.bgbl.de/xaver/bgbl/media.xav/bgbl_Bundesgesetzblatt%20Teil%20I_2019_Nr.%2027%20vom%2017.07.2019_bgbl119027.pdf?name=bgbl%2FBundesgesetzblatt%20Teil%20I%2F2019%2FNr.%2027%20vom%2017.07.2019%2Fbgbl119027.pdf&medianame=bgbl%2FBundesgesetzblatt%20Teil%20I%2F2019%2FNr.%2027%20vom%2017.07.2019%2Fbgbl119027.pdf&bk=bgbl1

Article Status

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