1cP-LSD
Aliases: 1cp, Curie, 1-cpa-lsd, 1-cyclopropanoyl-lsd, 1cplsd
Summary
1cP-LSD (1-cyclopropionyl-lysergic acid diethylamide) is an N-1 acylated prodrug that rapidly hydrolyzes to LSD in human serum, producing essentially identical pharmacology to LSD-25. Potency is approximately equivalent to LSD by weight, with most users reporting indistinguishable effects at standard doses. Use reagent testing (Ehrlich or Hofmann) on all batches to ensure authenticity and rule out NBOMe compounds or DOx substances.
Perspectives
“1cP-LSD now stands as one of my favorite lysergamides, second only to LSD itself. Most notable about this compound was that it was extremely visual relative to other lysergamides while remaining very lucid and coherent. There was little body load or overwhelming stimulation.”
“Despite the limited dose this was a good experience. I felt that it was slightly stronger than 1P, with subtle but noticeable differences throughout, and there did seem to be more clarity in parts; perhaps greater control.”
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 25-75µg | 75-150µg | 150-300µg | 300µg+ |
| Sublingual | 25-75µg | 75-150µg | 150-300µg | 300µg+ |
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 19-60 min | 0.75-2 hrs | 3-5 hrs | 3-5 hrs | 8-10 hrs |
| Sublingual | 19-60 min | 0.75-2 hrs | 3-5 hrs | 3-5 hrs | 8-10 hrs |
Effect Profile
11 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Strong visuals, headspace, and auditory effects with moderate body load
Tolerance
Tolerance Decay
Empirical user reports suggest marked tolerance next day with partial recovery over 7–14 days; values are indicative and individualized. Redosing same day extends duration more than intensity.
Cross-Tolerances
Effects
Aggregated from 11 Erowid experience reports