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    🧪 This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    2C-B-FLY Well-documented
    Well-documented
    Multiple authoritative sources agree on dosing and effects.
    • 6 corroborating sources
    • 1 ROA with full dose ladder
    • duration data present
    • 18 combo interactions documented
    • PubChem toxicity data
    • classified Research-chemical

    Aliases: 2c-bromo-fly, 2cb-fly, 2cbfly

    Psychedelic Research-chemical

    Summary TheDrug.Wiki Erowid TripSit PsychonautWiki

    2C-B-FLY is a potent psychedelic phenethylamine first synthesized by Aaron P. Monte in 1996. It is the dihydrodifuran analog of 2C-B with a significantly longer duration and more pronounced body load.

    Perspectives

    “Dang this drug is fun, I don't think I've encountered a better party drug. It's not necessarily deep or empathogenic or anything, its overall quality is that it's just plain fun.”

    “Overall 2C-B-FLY produced a decent ride, providing a more frivolous and physical contrast to my preferred psychedelics.”

    Dose Information TheDrug.Wiki TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Oral 5-10mg 10-18mg 18-25mg 25mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 30-60 min 1-2 hrs 3-5 hrs 2-3 hrs 6-24 hrs 6-12 hrs
    Insufflated 10-19 min 30-60 min 2-4 hrs 1-2 hrs 4-12 hrs 6-12 hrs

    Effect Profile

    19 reports

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Psychedelic 7.0
    Strong+ 7/10

    Strong visuals, body load, and auditory effects with moderate headspace

    Visual Intensity ×3
    10
    internal hallucinations color enhancement drifting tracers visual enhancements colour shifting +5 more
    Headspace Depth ×3
    6
    conceptual thinking emotion enhancement time distortion confusion
    Auditory Effects ×1
    8
    auditory distortion auditory hallucination
    ⚠ Body Load / Somatic Effects ×1
    10
    nausea temperature regulation suppression muscle tension bodily pressures teeth grinding
    Empathogen 7.0
    Strong+ 7/10

    Strong sensory enhancement with moderate euphoria, stimulation, and empathy

    Empathy / Social Openness ×3
    6
    empathy, affection, and sociability enhancement empathy
    Euphoria / Mood Elevation ×2
    7
    physical euphoria euphoria emotion enhancement
    Stimulation ×1
    7
    stimulation wakefulness teeth grinding restlessness
    Sensory Enhancement ×1
    10
    tactile enhancement enhanced tactile sensation color enhancement visual enhancements visual acuity enhancement increased libido
    Based on reports from:
    Effect Index Searing Sizzling Joviality Bluelight Big & Dandy Thread Erowid Experience Reports PsychonautWiki 2C-B-FLY The Drug Users Bible 2C-B-FLY
    View methodology →

    Tolerance

    Build-up develops rapidly after a single use (serotonergic psychedelic)
    Reset 7–14 days for baseline

    Tolerance Decay

    Full tolerance 1d Half tolerance 7d Baseline ~14d

    Cross-tolerance with serotonergic psychedelics is expected; anecdotal decay to baseline ~2 weeks. Data quality is limited; space experiences to reduce variability.

    Cross-Tolerances

    LSD
    60%
    Psilocybin
    60%
    2C-B
    70%

    Effects Erowid

    Aggregated from 19 Erowid experience reports

    Positive Effects 9

    Color Enhancement 78.9% 70%
    Tactile Enhancement 63.2% 70%
    Stimulation 52.6% 70%
    Music Enhancement 52.6% 70%
    Euphoria 47.4% 70%
    Body High 47.4% 70%
    Empathy 36.8% 70%
    Focus Enhancement 31.6% 70%
    Introspection 26.3% 70%

    Adverse Effects 7

    Anxiety 36.8% 70%
    Nausea 36.8% 70%
    Confusion 31.6% 70%
    Headache 26.3% 70%
    Muscle Tension 21.1% 70%
    Sweating 21.1% 70%
    Pupil Dilation 15.8% 70%

    Combinations TripSit

    Cross-Check 2C-B-FLY with another substance

    Trip Reports Effect Index

    Searing Sizzling Joviality nervewing

    Community Trip Reports

    Anecdotal first-person accounts from Reddit, Erowid, and Bluelight. Click a source to expand. Reports are harm-reduction context, not medical guidance.

    Erowid 8 reports 2 positive 5 neutral 1 cautionary visit
    A Medicinal Teacher positive exp #113788

    *** Intention: Dive into a shamanic healing process, focusing on sexual energy and codependence issues. I have 2-CB-FLY pellets from a RC vendor. This is the second time I take the pellets and I am pretty sure I have the substance that I report here.

    SacralChakra · 2C-B-Fly
    Sophisticated and Lovely positive exp #115824

    Saturday this weekend after having a nice afternoon with my gf. My friend Z came by to visit for our monthly tasting of a psychedelic we have both not tried, and that weekend we had two options, either 2C-P or 2C-B-Fly. We decided on Fly due to its shorter trip time. To give a little back story.

    The Drug Concierge · 2C-B-Fly · 14 mg oral
    You've Got to be Kidding Me neutral exp #109977

    Material sold as 10mg of 2C-B-FLY could not be easily tested, as it was in a gel tab. As I have never been led astray by the supplier and had performed an allergy test a few weeks before, I was willing to go out on a limb.

    Pfaffed · 2C-B-Fly · 400 mg oral / 400 mg oral / 10 mg oral / oral
    Initial Trial - Empathy and Pleasure neutral exp #53472

    12:45am - Ingested 14.4mg of 2CB-fly in liquid suspension. Turning on some Pink Floyd and browsing online now. I'm going to attempt to listen to some good music while laying in bed with eyes closed as I enter the full effects, and then I'll get back on the computer later after I've explored my consciousness a bit.

    Xorkoth · 2C-B-Fly · 14.4 mg oral / 5 hits smoked
    An Enlightened Afternoon neutral exp #72474

    <3 Material: 2CB-fly Dosage: 12mg Date: 7/6/08 Setting: Living room on a Sunday afternoon in the company of my wife and dog. Set: I am a bit exhausted from a couple previous days of hard work and more stress than usual. I do feel slightly down, but not deeply.

    the dreamer · 2C-B-Fly · 12 mg oral
    Digital Neon Shadows neutral exp #111529

    Previous experience: Weed edibles (did not like them), ethylone, some weed smoked, regular ale drinker T-0mins Ingested 10mg 2c-b-FLY. Ingested 600mg of phenibut as an anxiolytic as a precaution It is around noon. Given the trip reports I had read in the past, I was expecting a very mild effect.

    Cipher · 2C-B-Fly
    Searing Sizzling Joviality neutral exp #109435

    T0:00-Dosed cap on a mostly empty stomach. The setting is wonderful, several friends are over, and all of us are on some sort of psychedelic- 1 person on 4-HO-MiPT, 1 person on 4-AcO-DMT, and 2 people on LSD. T1:00-Not really feeling anything yet other than some nausea and nervous stimulation in my muscles.

    nervewing · 2C-B-Fly · 25 mg oral / repeated smoked
    From Nothing to Nowhere cautionary exp #68125

    I was chilling at a faire when a most interesting animal approached me. I recognized the animal and it offered me a new treat I had not heard of before. It told me the tale of the 2c-b-fly and asked if I would like to pilot such a craft.

    Lobster Cao · 2C-B-Fly · oral

    Bluelight Reference Guide Bluelight

    Phenethylamines The Big & Dandy 2C-B-Fly Thread

    Welcome to the Big & Dandy 2C-B-Fly Thread Warning: There have been incidents involving mix-up of 2C-B-Fly with Bromo-Dragonfly. The latter is about 10 times more potent and dangerous (potentially lethal) to overdose on.

    Read full thread on Bluelight →
    2C-B-FLY's nerd page Pharmacology, chemical data, effect profiles, and more
    →

    Helpful Links

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