Mixed Experience, Strange Hallucinogen For context, Iยd never used an entactogen before 5-MAPB. The acquisition of 5-MAPB came partially from both a desire for something to fill the role of MDMA and an inability to acquire MDMA itself.
5-MAPB
Well-documented
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 5 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 29 combo interactions documented
- toxicity data (PsychonautWiki)
- classified Research-chemical
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 5 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 29 combo interactions documented
- toxicity data (PsychonautWiki)
- classified Research-chemical
Aliases: 5mapb
Summary
5-MAPB is a potent non-selective monoamine releaser with approximately 3-5 times the potency of MDMA at serotonin and norepinephrine transporters. It functions as a full 5-HT2B receptor agonist, which suggests potential cardiac valve toxicity with repeated use; spacing sessions at least 4-6 weeks apart is strongly advised. Significant batch-to-batch variability in potency has been documented; always use reagent testing and start with a low dose.
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 | 5-8 hrs |
| Insufflated | 4-19 min | 19-40 min | 2-4 hrs | 1.5-3 hrs | 5-8 hrs |
| Rectal | 15-40 min | 30-60 min | 2-4 hrs | 1.5-3 hrs | 5-8 hrs |
| Intramuscular | 10-30 min | 19-40 min | 2-4 hrs | 1.5-3 hrs | 5-8 hrs |
Effect Profile
23 reportsScores (0–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Psychedelic
2.1
Light
2/10
Mild auditory effects with strong body load, low visuals and headspace
Visual Intensity
×3
3
colour enhancement
visual acuity enhancement
Headspace Depth
×3
1
time distortion
Auditory Effects
×1
4
music enhancement
Body Load / Somatic Effects
×1
9
vasoconstriction
nausea
teeth grinding
increased heart rate
sweating
Empathogen
8.1
Intense
8/10
Strong sensory enhancement, empathy, and euphoria with moderate stimulation
Empathy / Social Openness
×3
8
empathy enhancement
empathy, affection and sociability enhancement
increased sociability
Euphoria / Mood Elevation
×2
8
cognitive euphoria
euphoria
mood lift
Stimulation
×1
7
stimulation
wakefulness
teeth grinding
increased heart rate
Sensory Enhancement
×1
10
tactile enhancement
music enhancement
colour enhancement
visual acuity enhancement
Stimulant
6.1
Strong
6/10
Strong euphoria and focus with strong anxiety/jitters, mild stimulation
Stimulation / Energy
×3
5
stimulation
wakefulness
Euphoria / Mood Lift
×2
9
cognitive euphoria
euphoria
mood lift
motivation enhancement
Focus / Productivity
×2
8
analysis enhancement
memory enhancement
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
teeth grinding
increased heart rate
vasoconstriction
sweating
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-MAPB in people; research so far is on cells, rodents and poisoning cases. PsychonautWiki estimates that tolerance halves in 3-7 days and is gone in 1-2 weeks, and user advice collected by drugs.wiki suggests at least 4-6 weeks between sessions; neither cites a source.
Sources: Brandt et al. 2020 ยท Hofer et al. 2017 ยท PsychonautWiki: 5-MAPB ยท drugs.wiki (user consensus)
Effects
Aggregated from 8 single-substance Erowid and 15 Bluelight experience reports; 13 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.
Rows resting on fewer than 20 reports show a count (“3 of 7”) instead of a bar. Why 20?
Effect glossary — · full glossary
Positive Effects 35
82.6% (95% interval 63 to 93 percent)
94%
60.8% (95% interval 41 to 78 percent)
88%
56.5% (95% interval 37 to 74 percent)
86%
39.1% (95% interval 22 to 59 percent)
85%
30.4% (95% interval 16 to 51 percent)
92%
21.7% (95% interval 10 to 42 percent)
70%
6 of 15
90%
6 of 15
85%
5 of 15
84%
5 of 15
84%
4 of 15
84%
3 of 15
87%
2 of 15
80%
2 of 15
80%
2 of 15
82%
1 of 15
85%
1 of 15
75%
1 of 15
70%
1 of 15
85%
1 of 15
75%
Show 15 more positive effects
1 of 15
85%
1 of 15
95%
1 of 15
85%
1 of 15
85%
1 of 15
90%
1 of 15
65%
1 of 15
75%
1 of 15
85%
1 of 15
90%
1 of 15
85%
1 of 15
80%
1 of 15
85%
1 of 15
75%
1 of 15
85%
1 of 15
80%
Adverse Effects 12
43.5% (95% interval 26 to 63 percent)
85%
6 of 15
79%
4 of 15
76%
4 of 15
79%
2 of 15
88%
1 of 15
80%
1 of 15
75%
1 of 15
80%
1 of 15
80%
1 of 15
75%
1 of 15
80%
1 of 15
75%
Also reported in combinations. In the 13 5-MAPB reports where another drug was taken too, 0 mention hospital, emergency services or an overdose, 0 a seizure and 1 psychosis (too few reports for percentages). In the 8 single-substance reports: 0, 0 and 0. These are not in the figures above: they cannot be put down to 5-MAPB alone, and a mention is not always something that happened to the writer.
Combinations
Cross-Check 5-MAPB 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.
Erowid 8 reports 2 positive 4 neutral 2 cautionary visit
Background: It was my first time with this particular substance but Iยve done Methylone, MDMA, MDA, and an obscure synthetic cathinone called 4-EMC, so I have experience with euphoric empathogens. I am a 145lb male. T-1.5hr: I had some spicy buffalo wings since I didnยt have anything in my stomach.
After I purchased and Marquis tested 7 pristine mg from a trusted vendor I had a few prior purchases from, I found myself a month in and having exercised experience-gathering using carefully--oral and insufflation--chosen RsOA.
I obtained some 5-MAPB from a reliable source and decided to try it with a friend. He had to be up very early in the morning, so he didn't want to go all out, so we decided to initially shoot for a low dose.
5-MAPB Detonated a Sleeping Disorder on Me I donยt pretend to alarm nobody with this sensationalist title. Because I donยt have any proof of it, however I canยt avoid mixing the clues I have.
Night time setting, dorm/frat house type single room. This is two nights of initial research with some 5-MAPB as the primary intoxicant. On the first night I took 40mg nasal in two 20mg doses and 110 oral taken in 3 parachutes of 40 and 60 about 45 minutes apart.
Oddly Reassuring Experience Okay so, I'm Alex (pseudonym) and I'm from the United States. A friend (party animal) of mine took 5-MAPB with him to me from the UK. I thanked him and had the baggie in my backpack for some weeks. After a while, I decided to test the substance (0,5g bag).
Like most my trip reports, this is simply an overview conducted based on memory, which is not my strong point. I feel the need to record my results as this is a novel substance with few reports, yet I can see it taking off sometime in the near-future.
Bluelight 8 threads 2 positive 5 neutral 1 cautionary visit
Last night did a dose of 5-mapb together with my girlfriend. I am experienced in empathogeons and this is my second time doing 5-mapb. The first time I did it I had a really intense trip and really bad side effects-I dosed it at 107 mgs weight out (245 lbs) , girlfriend did 70 mgs (165).
1st try. It should be stated first that I have been using drugs on a massive scale compared to most people i know for umm 20 or so years. I have had a habit to almost every class of drugs there are. In general I will take more drugs than anyone else and i will enjoy being more fucked up than just about anyone i know.
OK so I have tested my batch out a few times, but last night was off the chains. Long story short surprise day off taken my me and surprise kids sleep over at in laws and wala on a hot and steamy august night we were free!!!!! Carefully measured out 90 mg for myself and 50 mg for my wife.
I'd like to share this experience as it was my first time with 5-MAPB and also my highest dosage (of the good stuff, there was lots of crap 5-MAPB going around back then that you could easily take a few .1g of and not feel much.) Since this experience I've had many encounters with 5-MAPB and love it dearly as an admixt...
SUBSTANCE: (1-(benzofuran-5-yl)-N-methylpropan-2-amine) Aka- 5 MAPB APPEARANCE: Light Tan with an almost slightly light orange tint CAS: N/A 5pm: Bombed 100mg of 5-MAPB in a rizla. And so it begins.....
Setting: In my room, quite warm! Substance: 5-MAPB hcl. aka 1-(benzofuran-5-yl)-N-methylpropan-2-amine Appearance: White Powder (from vendor thats been trading since 2007) User: 104KG healthy male, experience with MDMA 80-100mg, Methylone, 4-FA, Mephedrone REPORT t-0 minutes: Oral ROA of 100mg wrapped up in toilet pape...
I'm a 30 something male of average build. For comparison I find about 120mg mdmt be purfect but i have been known to enjoy several redoses. Probably a little less with the APB-s but not excessively so and also prone to redose (incidentally avoid doing 4-mmc after, you might find yourself surprised abd taking a moment o...
I weigh 53 kg and am not new to this class of drugs, but this was my first time with 5-MAPB. Setting: my own birthday party at my apartment. We played a concert for the guests and had finished and were feeling very relaxed, all guests were good friends. 22:00 - Took about 80 mg of 5-MAPB orally. SO took 100 mg.
Bluelight Reference Guide
The Main 5-MAPB Thread
1-(benzofuran-5-yl)-N-methylpropan-2-amine this ones just popped up about 2 weeks ago with some of the big vendors. rather expensive at the minute though. any knowledge or experiences with this new intriguing chemical? so far theres only one trip report but it does seem very promising as the next step towards a MDMA re...
Read full thread on Bluelight โ
5-MAPB's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
Add missing routes to PsychonautWiki Journal
The PsychonautWiki Journal app already has 5-MAPB, 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.
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Duration (reference)
5-MAPB: routes the PsychonautWiki Journal app is missing Source: SubstanceSearch (substancesearch.com) Insufflated duration: onset 4-19m ยท come-up 19-40m ยท peak 2-4h ยท offset 1.5-3h ยท total 5-8h ยท after-effects 6-48h Rectal duration: onset 15-40m ยท come-up 0.5-1h ยท peak 2-4h ยท offset 1.5-3h ยท total 5-8h ยท after-effects 6-48h Intramuscular duration: onset 10-30m ยท come-up 19-40m ยท peak 2-4h ยท offset 1.5-3h ยท total 5-8h ยท after-effects 6-48h 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.
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