2C-B-FLY-NBOMe Stats & Data
Receptor Profile
Receptor Actions
History & Culture
2C-B-FLY-NBOMe was discovered in 2002 and subsequently researched by Ralf Heim at the Free University of Berlin. The compound was later investigated in greater detail by a research team at Purdue University led by pharmacologist David E. Nichols. Structurally, the substance represents a hybrid design that combines the rigid benzodifuran ring system characteristic of the FLY series with the N-benzyl substitution pattern found in NBOMe compounds.
Effect Profile
CuratedStrong visuals, body load, and headspace with moderate auditory effects
Strong sensory enhancement with moderate stimulation, mild euphoria, low empathy
Tolerance & Pharmacokinetics
drugs.wikiTolerance Decay
Rapid 5‑HT2A desensitization produces short-term tachyphylaxis (hours–days). Functional tolerance typically halves within ~1 week and returns to near-baseline by 2–3 weeks; cross-tolerance with other classic psychedelics is expected but not fully quantified.
Cross-Tolerances
Legal Status
| Country | Status | Notes |
|---|---|---|
| United Kingdom | Class A | Controlled under the Misuse of Drugs Act 1971 through the N-benzylphenethylamine catch-all clause, which encompasses N-benzyl substituted phenethylamine derivatives. Class A substances carry the most severe penalties under UK law. |
| United States | Controlled (Vermont) | Designated as a controlled substance in the state of Vermont since January 2016. State-level scheduling; federal status may vary. |
Harm Reduction
drugs.wiki• Identity/testing: Because NBOMes are frequently sold on blotter as “acid,” always test. LSD gives a purple positive on Ehrlich reagent and typically fluoresces under UV; NBOMes do not fluoresce and have distinct reagent patterns. Marquis/Mecke are unreliable for confirming LSD but can flag NBOMe-like reactions; reagent testing cannot prove identity, only rule-in/out patterns. Use multiple reagents and, where possible, lab drug-checking.
• Oral activity nuance: NBOMes were long thought orally inactive when swallowed, but some salts show measurable oral bioavailability. Do not assume a swallowed NBOMe blotter is inactive; discard blotter after buccal/sublingual application rather than swallowing if avoiding further exposure.
• Microgram potency & volumetric dosing: Overdoses often stem from mismeasurement/static loss. Volumetric dosing substantially reduces risk: dissolve a precisely weighed amount into an appropriate solvent (e.g., high-proof ethanol or propylene glycol for poor water solubility), clearly label concentration, and measure volume for dosing.
• Route risk: Intranasal use is linked to a disproportionate number of severe cases (agitation, hyperthermia, seizures, ischemia). If used intranasally, reduce dose substantially versus buccal/sublingual and avoid co-stimulants.
• Vasoconstriction & heat risk: NBOMes can cause marked peripheral vasoconstriction (cold/numb digits, pallor/cyanosis) and hyperthermia/rhabdomyolysis at high doses. Keep ambient temperature moderate, avoid overexertion, and hydrate with electrolytes. Urgent care is indicated for chest pain, extreme agitation, limb discoloration/numbness, confusion, seizures, or hot/dry skin and altered consciousness.
• Combination risks: Avoid serotonergic combinations (e.g., MDMA, DXM) due to serotonin toxicity; avoid stimulants (cocaine/amphetamines) due to compounding vasoconstriction/arrhythmia risk; avoid tramadol due to seizures. Cannabis and dissociatives can unpredictably potentiate effects—go slowly or avoid.
• Acute management (for bystanders/clinicians): Calm, cooling, fluids and benzodiazepines are commonly used for severe agitation; antipsychotics may be used by professionals for frank psychosis but are not first-line for simple panic. Seek medical help early for hyperthermia or severe hypertension. Do not self-medicate with additional substances during a crisis.
• Mislabeling: EU and US monitoring documented NBOMes sold as LSD or 2C drugs on blotter and as powders; treat unknown “LSD-like” blotter with caution.
• Metabolism: Across NBOMe analogs studied in human liver microsomes and animals, major pathways include O-demethylation and N-debenzylation; inter-individual variability is likely. This may prolong or intensify effects in some users; titrate cautiously and avoid redosing in the same session.
• Solubility/handling: Freebase NBOMes are poorly water-soluble; solutions in high-proof ethanol or mixed PEG-400/ethanol are used by some to prepare 50–500 µg/mL standards. Label and store away from light/heat; prevent skin/mucosa exposure when handling powders or solutions.
• Tolerance/spacing: Response varies between sessions; a steep dose-response and rapid tolerance mean that redosing often adds side effects more than benefits. Space sessions by 2–3+ weeks to reduce tachyphylaxis and psychological after-load.
References
Data Sources
Cited References
- Bluelight: The Big & Dandy 2C-B-FLY-NBOMe thread
- Erowid: 2C-B-FLY vault
- Ettrup A et al. Radiosynthesis and in vivo evaluation of a series of substituted 11C-phenethylamines as 5-HT2A agonist PET tracers
- Nykodemova N et al. 2C-B-Fly-NBOMe Metabolites in Rat Urine, Human Liver Microsomes and C. elegans
- Richter LHJ et al. Tools for studying the metabolism of new psychoactive substances
- Syrova K et al. Acute pharmacological profile of 2C-B-Fly-NBOMe in male Wistar rats
- Syrová K et al. Acute pharmacological profile of 2C-B-FLY-NBOMe in male Wistar rats.
- PubMed: 36969854
Drugs.wiki References
- Syrová K et al. Acute pharmacological profile of 2C‑B‑FLY‑NBOMe in male Wistar rats.
- Erowid NBOMe Series – Effects and duration pages (incl. 2C‑C‑NBOMe).
- Erowid 25I‑NBOMe Dose page – ROA, freebase vs HCl vs HPBCD note.
- Erowid: LSD Field Tests Differentiate LSD from 25I‑NBOMe (Ehrlich positive for LSD; UV fluorescence difference).
- Erowid Crew Blog – On-site drug checking; LSD vs NBOMe reagent/UV behaviors; Marquis unreliability for LSD.
- TripSit Wiki – NBOMes overview (oral activity nuance; combination cautions).
- TripSit – Quick Guide to Volumetric Dosing; volumetric calculator.
- NBOMes – Highly Potent and Toxic Alternatives of LSD (review with fatalities, hyperthermia, rhabdomyolysis).
- Postmortem detection of 25I‑NBOMe in tissues/fluids (fatal case).
- 25CN‑NBOMe metabolites in HLM/rat/C. elegans – O‑demethylation and N‑debenzylation pathways (generalizable within class).
- Erowid Psychedelic Crisis FAQ – first aid, benzodiazepines commonly used clinically for severe agitation.
- EU Drugs Agency (EMCDDA/EUDA) Joint Report on 25I‑NBOMe – mis‑selling on blotter; non‑fatal intoxications incl. insufflation.
- Erowid NBOMe Series – Dose overview and potency warnings.
- Erowid 2C‑C‑NBOMe page – vasoconstriction, seizure/rhabdomyolysis reports (NBOMe class signal).
- Bluelight ‘Big & Dandy 2C‑B‑FLY‑NBOMe’ (community reports inc. solubility/handling issues).