Beta test rollout. This site is in community QA — please send feature requests, bug reports and data corrections on the Feedback page or on GitHub.

Home
    Disclaimer
    ๐Ÿงช This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    25C-NBOH Encyclopedic
    Encyclopedic
    Typical encyclopedia coverage. Cross-reference for important decisions.
    • 4 corroborating sources
    • 1 ROA with full dose ladder
    • duration data present
    • 29 combo interactions documented
    • toxicity data (PsychonautWiki)
    • classified Tentative
    • classified Research-chemical

    Aliases: 2c-c-nboh, Nboh-2c-c

    Summary dose.wiki TripSit PsychonautWiki

    25C-NBOH is a novel research chemical with extremely limited human use history and assumed similar toxicity to 25C-NBOMe, which has been linked to multiple deaths. This substance must NEVER be insufflated (snorted) due to high risk of fatal overdose. Compounds of the NBOH family are NOT orally active and must be administered sublingually, holding in the mouth for 15-25 minutes.

    Dose Information source varies by band

    ROA Light Common Strong Heavy
    Sublingual 250-500ยตg 500-750ยตg 750-1000ยตg 1400-2000ug+
    Light Common Strong Heavy
    Sources· 1 of 1 ladders not fully identified

    Sublingual

    Dose ladder — Light: PsychonautWiki · Common, Strong: dose.wiki, PsychonautWiki · Heavy: not identified

    Onset, Duration & After-effects dose.wiki TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Sublingual 15-45 min 30-90 min 1.5-3 hrs 2-4 hrs 72-144 hrs 4-6 hrs

    Effect Profile

    3 reports

    Scores (0–10) curated from multiple sources:

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

    Full methodology

    Psychedelic 8.4
    Intense 8/10

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

    Visual Intensity ×3
    10
    colour enhancement drifting tracers synaesthesia pattern recognition enhancement colour shifting +6 more
    Headspace Depth ×3
    9
    conceptual thinking recursion emotion enhancement personal bias suppression time distortion confusion
    Auditory Effects ×1
    10
    auditory distortion auditory hallucination synaesthesia
    ⚠ Body Load / Somatic Effects ×1
    10
    nausea vasoconstriction temperature regulation suppression muscle tension increased heart rate
    Based on reports from:

    Tolerance

    Build-up develops rapidly after a single use
    Reset 7โ€“14 days for baseline

    Tolerance Decay

    Full tolerance 1h Half tolerance 10d Baseline ~14d

    Effects Erowid

    Aggregated from 3 single-substance Erowid experience reports; 1 Erowid reports where another drug was taken too are left out

    Each bar shows the share of analyzed reports whose text mentions that effect — a mention is not always a first-hand experience (fear of an effect or something witnessed can count). Mentions saying the effect did not happen are left out; that check reads keywords, so it can miss some. The shaded band on a bar, and the small range after its number, is the 95% interval: where the share could plausibly be with other reports of the same kind. Fewer reports, wider band. Tap or hover any number for details. The second value is the Bluelight extractor's per-effect confidence; a dash means the row is Erowid-derived, which has no confidence measurement.

    Too few reports for bars: these effects come from 3 single-substance Erowid reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?

    Positive Effects 1

    3 of 3 –

    Adverse Effects 0

    Combinations TripSit

    Cross-Check 25C-NBOH with another substance

    Community Trip Reports

    Anecdotal first-person accounts from Reddit, Erowid, Bluelight, and Dose.wiki. Click a source to expand. Reports are harm-reduction context, not medical guidance. Tags summarise each author's own verdict — how reports are classified.

    Erowid 4 reports 3 positive 1 neutral visit
    The Five of Us... neutral exp #102297

    NBOH for Dummies [Erowid Note: The term "acid" has been used as a common name for d-LSD since the 1960s. Although confusion associated with newer psychoactive substances has lead some people to use the term "acid" to refer to anything LSD-like or anything psychedelic on blotter or sold in drops, we believe this represe...

    ModestMouse · 1 hit sublingual
    Dipping the Toe positive exp #101803

    23:10 Administered half-tab (500ug) 25C-NBOH, sub-lingual. 23:30 (T+20mins) Not feeling any effects yet. Still have tab between top lip and gum. Playing some piano, just improvising some ideas. I think for this trip I will leave the record button on for the duration.

    F. Eastwood · smoked / 500 ug buccal
    Gentle Clear-Headed and Uplifting positive exp #102277

    Background: 31 year old male, 190 lb/86 kg body weight. Past experience includes DXM, cannabis, psilocybin, LSD, salvia, and MDMA. What follows is my first research chemical experience. Both trials were at home, with no plans made. I take Wellbutrin 450 mg daily.

    finpat · 450 mg oral / 500 ug buccal / 1 mg sublingual
    Introspective Gold positive exp #102984

    I have had a reasonable experience with psychedelics over the two years prior to dosing 25-c NBOH. These included: DMT, Psilocybin, Muscimol, LSD, 25-i NBOH and MDA. I consumed no drugs of any kind for 2 weeks prior to dosing. [0:00] - Dose of 1000ug administered sub-lingually via a blotter on an empty stomach.

    S.B. · 1 mg sublingual
    →

    Helpful Links

    Import into PsychonautWiki Journal

    The PsychonautWiki Journal app includes 25C-NBOH, but its built-in data can be thinner than ours. Importing this file adds a separate "25C-NBOH (Substance Search)" custom substance with our dose ranges, durations and tolerance, so you can log against whichever you prefer.

    ⬇ Download import file Import this file as custom substances and you get "25C-NBOH (Substance Search)" with every route's full dose ladder and timeline, no typing. Works on iOS and Android (v15+); the format is confirmed by the app's developer.

    Ranges are harm-reduction guidance, not a prescription.