This is my first report on bluelight so here goes! For a quick background on me to get where this report is coming from I have been an on off heavy user of mdma + cathonines for a few years.
5-APB
Well-documented
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 7 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 30 combo interactions documented
- toxicity data (PsychonautWiki)
- classified Research-chemical
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 7 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 30 combo interactions documented
- toxicity data (PsychonautWiki)
- classified Research-chemical
Aliases: Head candy, 5apb
Summary
5-(2-Aminopropyl)benzofuran (commonly known as 5-APB) is a lesser-known novel entactogen of the benzofuran class that produces MDA-like entactogenic and stimulating effects when administered. It is structurally related to entactogens like 5-MAPB, 6-APB, and MDA. 5-APB was first synthesized in 1993 by psychedelic chemist and researcher David E.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 40-60mg | 60-80mg | 80-100mg | 100mg+ |
Light
Common
Strong
Heavy
Sources
Oral
Dose ladder — PsychonautWikiOnset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 19-60 min | 45-90 min | 2-4 hrs | 1.5-3 hrs | 7-8 hrs |
| Insufflated | 4-15 min | 19-40 min | 2-4 hrs | 1.5-3 hrs | 7-8 hrs |
| Rectal | 10-30 min | 45-90 min | 2.5-4 hrs | 2-3 hrs | 7-8 hrs |
Effect Profile
8 reportsScores (0–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Psychedelic
5.5
Strong
6/10
Strong visuals and auditory effects with strong body load, mild headspace
Visual Intensity
×3
8
visual geometry
color enhancement
tracers
pattern recognition enhancement
Headspace Depth
×3
4
personal meaning enhancement
emotion enhancement
time distortion
Auditory Effects
×1
8
auditory distortion
auditory hallucination
Body Load / Somatic Effects
×1
10
nausea
temperature regulation suppression
vasoconstriction
teeth grinding
increased heart rate
jaw clenching
+1 more
Empathogen
9.1
Intense+
9/10
Strong empathy and euphoria with moderate stimulation and sensory enhancement
Empathy / Social Openness
×3
10
empathy enhancement
empathy
empathy, affection and sociability enhancement
feelings of empathy
sociability enhancement
affection enhancement
+1 more
Euphoria / Mood Elevation
×2
10
physical euphoria
euphoria
cognitive euphoria
emotion enhancement
Stimulation
×1
7
stimulation
wakefulness
teeth grinding
increased heart rate
Sensory Enhancement
×1
7
tactile enhancement
color enhancement
increased libido
Stimulant
6.9
Strong+
7/10
Strong euphoria and focus with strong anxiety/jitters, mild stimulation
Stimulation / Energy
×3
5
stimulation
wakefulness
Euphoria / Mood Lift
×2
10
physical euphoria
euphoria
cognitive euphoria
motivation enhancement
Focus / Productivity
×2
10
focus enhancement
analysis enhancement
memory enhancement
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
paranoia
increased heart rate
teeth grinding
jaw clenching
vasoconstriction
+1 more
Based on reports from:
Tolerance
No tolerance chart. No study has measured how long tolerance to it lasts, so this page shows what is known instead of a curve.
No study has measured tolerance to 5-APB in people; research so far is on cells, rats and poisoning cases. PsychonautWiki estimates that tolerance halves in 3-7 days and is gone in 1-2 weeks, without citing a source. Lab tests show 5-APB activates the 5-HT2B receptor, which is linked to heart-valve damage, so regular use carries a risk of its own.
Sources: Iversen et al. 2013 · Rickli et al. 2015 · PsychonautWiki: 5-APB
Effects
Aggregated from 2 single-substance Erowid and 6 Bluelight experience reports; 8 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 2 single-substance Erowid and 6 Bluelight 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?
Effect glossary — · full glossary
Positive Effects 16
5 of 6
91%
4 of 6
89%
4 of 6
89%
2 of 6
85%
2 of 6
90%
2 of 6
80%
2 of 6
75%
2 of 6
75%
2 of 6
75%
1 of 6
80%
1 of 6
80%
1 of 6
85%
1 of 6
85%
1 of 6
80%
1 of 6
85%
1 of 6
80%
Adverse Effects 7
2 of 6
82%
2 of 6
82%
1 of 6
70%
1 of 6
75%
1 of 6
75%
1 of 6
80%
1 of 6
65%
Combinations
Cross-Check 5-APB with another substanceCommunity 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.
Bluelight 2 threads 2 positive visit
Forewarning: As with my 6-APB report, I'd like to add a word of caution to this. 5-APB is an MDA analogue, and as such it should be treated with the same caution as MDA - using it more than once a month (ideally you should use it less frequently than once a month too) is likely to lead to similar issues of serotonin re...
5-APB's nerd page
Pharmacology, chemical data, effect profiles, and more
→
Helpful Links
Add missing routes to PsychonautWiki Journal
The PsychonautWiki Journal app already has 5-APB, but its built-in entry only covers Oral. Here are the other routes we have data for. You can't edit a built-in substance, but you can add a Custom Unit for any of these routes to log it.
⬇ Download import file
Import this file as custom substances
and you get "5-APB (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. The manual values below work for older
versions.
Duration (reference)
5-APB: routes the PsychonautWiki Journal app is missing Source: SubstanceSearch (substancesearch.com) Insufflated duration: onset 4-15m · come-up 19-40m · peak 2-4h · offset 1.5-3h · total 7-8h · after-effects 4-24h Rectal duration: onset 10-30m · come-up 0.75-1.5h · peak 2.5-4h · offset 2-3h · total 7-8h · after-effects 6-24h Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.
Ranges are harm-reduction guidance, not a prescription.
Report an issue or suggest an edit
Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for 5-APB? Let us know. Reports are reviewed by moderators — this is not posted publicly.