NEP Stats & Data
CCCC(NCC)C(=O)c1ccccc1QQAHEGDXEXIQPR-UHFFFAOYSA-NReceptor Profile
Receptor Actions
Receptor Binding
History & Culture
N-Ethylpentedrone emerged on the online research chemical market during the mid-2010s, with documented user experience reports beginning to appear around 2016. The compound represents a generation of synthetic cathinone derivatives developed as functional and structural alternatives to earlier stimulants in this chemical class. These substances, including NEP, are sometimes colloquially grouped under the imprecise umbrella term "bath salts," a label that emerged from early marketing strategies used to circumvent drug scheduling laws. By 2020, NEP had established itself as a relatively popular option within research chemical communities, likely due to its availability and effects profile. Its development and distribution follow the pattern typical of novel psychoactive substances: synthesized to provide effects similar to controlled predecessors while initially existing in legal grey areas before eventually being scheduled in various jurisdictions.
Effect Profile
Curated + 6 ReportsStrong sensory enhancement with moderate stimulation and euphoria, low empathy
Strong anxiety/jitters and focus with moderate euphoria, mild stimulation
Tolerance & Pharmacokinetics
drugs.wikiCross-Tolerances
Experience Report Analysis
ErowidDemographics
Gender Distribution
Age Distribution
Reports Over Time
Effect Analysis
ErowidEffects aggregated from 6 experience reports (6 Erowid)
Effect Sentiment Distribution
Confidence Distribution
Positive Effects 4
Adverse Effects 1
Real-World Dose Distribution
62K DosesFrom 22 individual dose entries
Insufflated (n=17)
Form / Preparation
Most common forms and preparations reported
Legal Status
| Country | Status | Notes |
|---|---|---|
| Australia | Schedule 9 | Prohibited substance under a cathinone blanket ban provision. As a Schedule 9 substance, no therapeutic use is recognized and possession, production, and distribution are illegal. |
| Brazil | Controlled | All cathinone analogues became controlled substances on September 7, 2018, through a blanket ban appended to Portaria SVS/MS nº 344. Possession, use, and distribution are illegal. |
| Canada | Not explicitly scheduled | While not individually listed, NEP may be treated as a Schedule I substance under the Controlled Drugs and Substances Act due to provisions banning derivatives of amphetamine. |
| China | Controlled | Listed as a controlled substance under national drug legislation. Production, distribution, and possession without authorization are prohibited. |
| France | Stupéfiant | Classified as a narcotic substance (stupéfiant) as a derivative of cathinone with alkyl substitutions on the nitrogen and R2 position. Possession, purchase, sale, and manufacture are illegal. |
| Germany | NpSG controlled | Controlled under the Neue-psychoaktive-Stoffe-Gesetz (New Psychoactive Substances Act) since November 26, 2016. Production and importation for market distribution, administration to others, and trading are punishable offenses. Possession is illegal but not subject to criminal penalties. |
| Italy | Table 1 | Added to Table 1 of psychotropic substances on December 29, 2020. As a Table 1 substance, it is subject to the strictest controls under Italian drug legislation. |
| Japan | Controlled | Designated as a controlled substance under national drug control legislation. Possession, distribution, and manufacturing are prohibited. |
| Netherlands | Legal | Currently unscheduled and legal to possess. However, it belongs to a substance group that may become prohibited under recently enacted New Psychoactive Substances (NPS) legislation. |
| Sweden | Controlled | Classified as a controlled substance since November 12, 2019. Subject to Swedish narcotics legislation with penalties for possession, distribution, and manufacturing. |
| Switzerland | Controlled (Verzeichnis E) | Regulated as a defined derivative of cathinone under Verzeichnis E point 1 of the narcotics legislation. An exception exists for scientific or industrial purposes, which remain legal with appropriate authorization. |
| United Kingdom | Class B | Controlled as a Class B substance under the Misuse of Drugs Act 1971 through a cathinone catch-all clause. Possession carries penalties of up to five years imprisonment, while supply offenses carry up to fourteen years. |
| United States | Not scheduled | Not federally scheduled under the Controlled Substances Act. However, possession or distribution intended for human consumption could potentially be prosecuted under the Federal Analogue Act due to structural and pharmacological similarities to pentedrone, which is a Schedule I controlled substance. |
Harm Reduction
drugs.wikiWhy this matters and how to reduce risk: 1) Human in‑vivo pharmacokinetics are unknown; an in‑vitro study in human liver microsomes found a long metabolic half‑life (~770 min ≈ 12.8 h), so redosing can stack and prolong sympathomimetic strain even if the subjective ‘rush’ fades. Space doses and avoid consecutive‑day use. 2) Mislabeling is common: multiple Swiss drug‑checking alerts found NEP sold as 3‑MMC; because NEP is active at much lower oral doses (≈20–50 mg vs 100–200 mg for 3‑MMC), substitution markedly increases overdose risk. Use accredited drug‑checking when possible; if not, start with a very small test dose and wait fully for effects. 3) Cardiovascular and hyperthermia risks are central with cathinones; clinical cases with NEP have included severe agitation, fever, rhabdomyolysis and acute kidney injury. Avoid hot environments and intense exertion; take cooling breaks; sip isotonic fluids (not excessive water) and replace electrolytes during prolonged activity. 4) Seizure risk is heightened by co‑factors (sleep deprivation, dehydration, tramadol, bupropion, stimulant stacking). Avoid these combinations and ensure sleep/nutrition before and after sessions. 5) Intranasal dosing produces a steeper rise, more peripheral side effects and greater compulsion than oral; vaporizing/inhalation reports often describe very short cycles with strong urges to redose and respiratory irritation—prefer oral if you choose to use at all. 6) Set maximum session amounts in advance, measure doses with a 0.001 g scale, and avoid ‘chasing’ diminishing returns—compulsion is a common pathway to harm. 7) Because NEP is frequently mis‑sold, reagents may not reliably distinguish it from other cathinones; lab drug‑checking (FTIR/GC‑MS/LC‑HRMS) is the safest way to identify contents. 8) Aftercare: expect a dysphoric ‘crash’; plan nutrition, hydration and sleep; consider a non‑sedating day off stimulants for at least 14+ days to let tolerance and cardiovascular strain normalize. 9) Seek urgent care for red‑flag symptoms: persistent chest pain, severe headache, confusion/delirium, temperature >38.5°C (101.3°F), rigid muscles, dark urine, or inability to keep fluids down.
References
Data Sources
Cited References
- Bluelight: NEP discussion thread (2016)
- CFSRE: NEP monograph
- Drug Intelligence Bulletin: Rising Trend of NEP (2023)
- Duart-Castells et al. (2021): Role of amino terminal substitutions in synthetic cathinones
- Erowid: N-Ethylpentedrone Experience Reports
- Forensic fatal cases (2025)
- Journal of Analytical Toxicology: NEP case series
- MDPI: Acute pharmacological effects of NEH and NEP in humans (2025)
- Metabolic profile: NEH, NEP, and 4-CMC (2024)
- PMC: Metabolic stability and metabolite identification of NEP
- PMC: Toxicological analysis of cathinone intoxications
- PubChem: N-Ethylpentedrone (CID 132886199)
- PubMed: Human hepatocyte elimination half-life study (38399311)
- Reddit r/ResearchChemicals: NEP experience report (2019)
- Reddit r/ResearchChemicals: NEP tips and facts (2018)
- ResearchGate: Oral-fluid pharmacokinetics table
- ScienceDirect: Repeated administration of NEP induces aggression in mice (2022)
- TripSit: Ethyl-pentedrone factsheet
- UNODC: Early Warning Advisory on NPS
- UNODC: ICE 2024/1 Summary - N-Ethylpentedrone listings
- Metabolic profile NEH/NEP/4-CMC (2024)
- Journal of Analytical Toxicology case series
Drugs.wiki References
- NEP metabolic stability and metabolites (human liver microsomes)
- Cathinone intoxications—clinical risks (review, includes NEP concentration data)
- NEP emergency case with severe agitation, fever, rhabdomyolysis and AKI (Belgium)
- SaferParty—NEP sold as 3‑MMC (2024 warning)
- SaferParty—NEP sold as 3‑MMC (2024 Luzern alert; 98% NEP)
- SaferParty—Blog: mislabelled 3‑MMC/4‑MMC often contains NEP; dose differences highlighted (2025)
- TripSit—Drug combinations (stimulants with MAOIs, tramadol, cocaine/others)
- StatPearls—Sympathomimetic toxicity (assessment and complications)
- Bupropion—seizure risk and contraindications (StatPearls)
- DXM—serotonin syndrome case series (risk with serotonergic co‑use)
- EUDA European Drug Report 2025—cathinone harms and deaths in EU
- Bluelight—NEP megathread (nomenclature, user patterns)
- Reddit—NEP experience report (vaping/insufflation, compulsion, cough)