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

    5-IAI Encyclopedic
    Encyclopedic
    Typical encyclopedia coverage. Cross-reference for important decisions.
    • 3 corroborating sources
    • 2 ROAs with full dose ladders
    • duration data present
    • 18 combo interactions documented
    • classified Tentative
    • classified Research-chemical

    Aliases: Hdep-28, Ethylnaphthidate, 5-iodo-2-aminoindan, 5iai

    Summary TheDrug.Wiki TripSit

    Animal studies show markedly lower serotonergic neurotoxicity than p-iodoamphetamine, but single 40 mg/kg doses still reduced hippocampal 5-HT uptake sites. Human anecdotal reports indicate 5-IAI is less euphoric and stimulating than MDMA, with some users reporting dysphoria, anxiety, and hallucinations at various doses. Many products sold as 5-IAI between 2010-2013 were mislabeled or adulterated; reagent testing is essential.

    Dose Information TheDrug.Wiki TripSit

    ROA Light Common Strong Heavy
    Oral 15-30mg 30-50mg 50-100mg 100mg+
    Insufflated 5-15mg 15-35mg 35-60mg 60mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki TripSit

    ROA Onset Comeup Peak Offset After Effects
    Oral 20-45 min 30-60 min 1-3 hrs 2-3 hrs 1-24 hrs
    Insufflated 5-15 min 15-30 min 1-2.5 hrs 2-3 hrs 1-24 hrs
    Rectal 10-20 min 20-40 min 1-2.5 hrs 2-3 hrs 1-24 hrs

    Effect Profile

    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 2.9
    Light+ 3/10

    Mild auditory effects with low body load, visuals, and headspace

    Visual Intensity ×3
    2
    visual enhancement
    Headspace Depth ×3
    2
    emotion enhancement
    Auditory Effects ×1
    4
    music enhancement
    Body Load / Somatic Effects ×1
    3
    teeth grinding sweating
    Empathogen 5.9
    Strong 6/10

    Strong sensory enhancement with moderate euphoria, mild empathy and stimulation

    Empathy / Social Openness ×3
    5
    empathy and sociability increased sociability
    Euphoria / Mood Elevation ×2
    7
    euphoria mood lift emotion enhancement
    Stimulation ×1
    4
    stimulation teeth grinding
    Sensory Enhancement ×1
    8
    tactile enhancement music enhancement visual enhancement
    Stimulant 3.2
    Light+ 3/10

    Moderate anxiety/jitters with mild euphoria, low stimulation and focus

    Stimulation / Energy ×3
    3
    stimulation
    Euphoria / Mood Lift ×2
    5
    euphoria mood lift
    Focus / Productivity ×2
    2
    cognitive enhancement
    Anxiety / Jitters ×1
    7
    anxiety teeth grinding sweating

    Tolerance

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

    Tolerance Decay

    Full tolerance 6h Half tolerance 14d Baseline ~35d

    Pattern extrapolated from MDMAโ€‘like releasers and aminoindane reports: acute tachyphylaxis within a session, partial tolerance over 1โ€“2 weeks, and return to nearโ€‘baseline by ~4โ€“6 weeks with abstinence. Data quality low due to absence of controlled human studies.

    Effects TheDrug.Wiki TripSit

    Positive
    • Stimulation
    • Increased energy/alertness
    Negative
    • Teeth grinding
    • Pupil dilation
    • Increased perspiration
    • Weight loss
    • Sweating
    Neutral
    • Decreased need for sleep
    • Decreased appetite
    • Distrubed sleep patterns
    • Bruxia
    Positive
    • Empathy and sociability
    • Emotion enhancement
    • Cognitive enhancement
    • Euphoria
    • Increased sociability
    • Mood lift
    Negative
    • Dysphoria
    • Anxiety
    • Agressiveness
    Neutral
    • Talkativeness
    • Excessive talking
    • Moodiness
    Positive
    • Tactile enhancement
    • Music enhancement
    • Visual enhancement
    • Increased music appreciation
    Negative
    • Appetite suppression
    • Dehydration
    • Light sensitivity
    Neutral
    • Increase sexuality
    • Visual and audiotory hallucinations itchiness
    • Increased sexuality

    Combinations TripSit

    Cross-Check 5-IAI with another substance

    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.

    Bluelight 6 threads 6 neutral visit
    5 Iai 70 Mg First Time neutral

    5-IAI Hi all this is my first post and first trip report on this forum, i am going to make this as accurate, honest and have as much information as possible After reading up about this drug i have really been looking forward to this in some respects but with all the speculation of debatable trip reports out there i app...

    scraped 2026-03-14
    5 Iai Inexperienced Just Odd neutral

    5-IAI - Inexperienced - Odd but Interesting Prologue: Really, this substance i found to be strange. I guess i should start with the source. I got some of the last supplies. They mentioned it wasn't worth the cost of manufacture due to quantity required for research. So i obtained 1 gram before it was too late.

    scraped 2026-03-14
    5 Iai 1 Gram First Time Disappointment Before Major Trip neutral

    5IAI - research chemical claiming to have similar effects to MDMA, and release serotonin/dopamine Cheap chemical, heard mixed reviews on it. some liked it, some disliked it. Most agreed it is nowhere near as good as molly Ok, so swim recently ordered a gram of a research chemical 5IAI from an online vendor.

    scraped 2026-03-14
    5 Iai 250 Mg New Experience neutral

    that's what it says on the packet. I'll update this every 30-60 mins. 5.30 pm. on a 0.00 scale I measured 25mg and bombed it. 6.05 - some slight feeling, slightly wider eyed, pretty relaxed. There is something, But almost nothing really. weighed out another 25mg bombed. I hope this is not some crap like dimethocaine.

    scraped 2026-03-14
    5iai First Time neutral

    After reading reports on here and not finding much i thought i'd post my own. I received 1g today and tried it for first time about an hour ago. The stuff i have is a fine white powder which looks like it has little crystals, it has no smell but the taste is quite horrible on the tongue.

    scraped 2026-03-14
    5 Iai First Time The Deep Fix neutral

    Male, 50 yrs old,weight 80 kgs. Five years IV amphetamine use,ending about ten years ago. One years (mild) Heroin addiction ending two years ago-no maintenance. Since then I have limited myself to occasional use of RC's(well,ok, about once a week!).Didn't really rate 4-MMC, hated bk-MBDB,enjoyed MDPV, loved Methylone-e...

    scraped 2026-03-14

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