2-AI Encyclopedic

Encyclopedic

Typical encyclopedia coverage. Cross-reference for important decisions.

5 corroborating sources

1 ROA with full dose ladder

duration data present

toxicity data (PsychonautWiki)

classified Tentative

classified Research-chemical

Aliases: Su 8629, 2-indanamine, 2-aminoindan, Pink champagnes, 2ai, 2-aminoindane

Summary dose.wiki Erowid TripSit PsychonautWiki

2-AI is a rigid amphetamine analogue that surfaced as a research chemical in the early 2000s. Reports describe mild, functional stimulation with minimal euphoria. Toxicology data remain sparse and some jurisdictions regulate it alongside amphetamine analogues.

Dose Information TripSit

ROA	Light	Common	Strong	Heavy
Oral	5-10mg	10-20mg	20-40mg	40mg+

Light Common Strong Heavy

Sources

Oral

Dose ladder — TripSit

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

ROA	Onset	Comeup	Peak	Offset	After Effects	Total
Oral	15-45 min	30-60 min	30-90 min	1-2 hrs	1-6 hrs	1-2 hrs
Insufflated	5-15 min	15-30 min	30-90 min	1-2 hrs	1-6 hrs	1-2 hrs
Rectal	5-10 min	15-30 min	30-90 min	1-2 hrs	1-6 hrs	1-2 hrs

Effect Profile

10 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

Stimulant 6.6

Strong+ 7/10

Strong focus and euphoria with strong anxiety/jitters, mild stimulation

Stimulation / Energy ×3

stimulation wakefulness

Euphoria / Mood Lift ×2

euphoria cognitive euphoria mood lift motivation enhancement

Focus / Productivity ×2

focus enhancement analysis enhancement memory enhancement thought acceleration motivation enhancement

⚠ Anxiety / Jitters ×1

anxiety teeth grinding increased heart rate bruxism sweating

Based on reports from:

Erowid Experience Reports PsychonautWiki 2-AI The Drug Users Bible 2-AI

Tolerance

Build-up develops over days to weeks of regular use

Reset 3–7 days for acute tolerance; longer for full reset

Tolerance Decay

Full tolerance 6h Half tolerance 7d Baseline ~14d

Pattern inferred from transporter‑releasing stimulants and community reports: fast within‑session tachyphylaxis with decay to near‑baseline in ~7–10 days. Exact magnitudes are uncertain.

Cross-Tolerances

amphetamine

cathinones (general)

modafinil (functional tolerance)

Effects Erowid

Aggregated from 10 single-substance Erowid experience reports; 2 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 10 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 2

6 of 10 –

5 of 10 –

Adverse Effects 2

5 of 10 –

4 of 10 –

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 8 reports 3 positive 3 neutral 2 cautionary visit

Painful but Pleasant positive exp #57673

I have recently bought 2-AI from an online vendor. After purchasing I read some fairly negative reports on it so felt a little disappointed in anticipation. Thankfully the reports appear to be unduly unappreciative. I have found it to be effective, enjoyable and economical.

Methods of Hypertension cautionary exp #54042

So, I was relaxing at home, abut 2 AM. on an IM (instant messaging) service, I started talking to E. At the time, I was pretty awake. I knew I had an exam the next day, but falling to sleep at this time, would most certainly render me unable to attend the exam. I ask E if he has any ideas to keep me awake.

The 2-AI Sessions neutral exp #55978

Since there is so little information on 2-Aminoindan I decided to take it for a test drive. I was able to obtain a sufficient quantity for experimentation from a source believed to be reliable.

Summary and Notes neutral exp #50392

A brief background of the subject (me); I am male, 21 and about 11 stone, prior experience with a wide range of psychoactives. 2-AI: This substance initially appealed to me due to its legality and ease of purchase (UK).

2-AI Revisited neutral exp #56608

So after a several attempts with dosages up to 50mgs and relatively mild experiences I decided that not only was this substance seemingly lacking in the reportedly potentially 'dangerous' potency levels but that I wanted to really take it for a solid test drive. I measured out 100mgs into a veg-cap and down the hatch.

Potent Painkiller positive exp #49250

I recieved my order of 1 gram of 2-aminoindan, and decided to do a quick bioassay. Set: bedroom, with a few friends, music playing. Mindset: in considerable pain due to unknown arm injury, unable to move arm or type without severe pain.

Just Not Worth It in My Book cautionary exp #86851

I am an 18 year old college student from the United States who has dabbled with the illegal drugs some. I have done pills, e, weed and I regularly drink. However, the spectrum of legal highs fascinated me so I did some shopping/research and came across 'Pink Champagne' pills containing an under experienced/researched c...

Subtle Euphoria Overly Boring positive exp #99787

10:32 am: ~5-10mg allergy test (sublingual) 10:52 am: No effects noticed besides perhaps slightly sharper/clearer and brighter vision, but I'm going to put that down to placebo. 11:02 am: 70mg mixed into 2ml of water and plugged. 11:12 am: Not feeling any different really.

Bluelight 4 threads 1 positive 3 neutral visit

2 Ai Little Summary Uk neutral

I know there are numerous (better written) reports on this already but thought would put this out to get some more opinion up on it; this substance seems to be legal in UK hence I could imagine many Uk'ers thinking about it.....

2 Aminoindan First Time 2ai Bioassay neutral

2 Aminoindaine 2 Ai 70mg Rectal neutral

This is my first trip report here so I hope I've written it okay. Not the most exciting or interesting chemical to read about, but there is very little information on it online so I thought I'd share my experience to contribute to what little research there is.

2 Aminoindan 4th Time Rectal Bioassay Results positive

Alright, I felt it time to post another trip report on my evaluations of 2-aminoindan, or 2-AI, which is basically a cyclic amphetamine, with the alkyl side chain attatched back onto the benzene ring.

2-AI's nerd page Pharmacology, chemical data, effect profiles, and more

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Helpful Links

📘 Experience Reports 📖 dose.wiki 📖 TripSit 📖 PsychonautWiki 📖 The Drug Users Bible

Add missing routes to PsychonautWiki Journal

The PsychonautWiki Journal app already has 2-AI, 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 "2-AI (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)

2-AI: routes the PsychonautWiki Journal app is missing
Source: SubstanceSearch (substancesearch.com)


Insufflated duration: onset 5-15m · come-up 15-30m · peak 0.5-1.5h · offset 1-2h · total 1-2h · after-effects 1-6h
Rectal duration: onset 5-10m · come-up 15-30m · peak 0.5-1.5h · offset 1-2h · total 1-2h · after-effects 1-6h

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 2-AI? Let us know. Reports are reviewed by moderators — this is not posted publicly.

2-AI Encyclopedic Encyclopedic Typical encyclopedia coverage. Cross-reference for important decisions. 5 corroborating sources 1 ROA with full dose ladder duration data present toxicity data (PsychonautWiki) classified Tentative classified Research-chemical