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

    Isopropylphenidate Encyclopedic
    Encyclopedic
    Typical encyclopedia coverage. Cross-reference for important decisions.
    • 3 corroborating sources
    • 2 ROAs with full dose ladders
    • duration data present
    • PubChem toxicity data
    • classified Tentative
    • classified Research-chemical

    Aliases: ipd, iph, ipp, ippd, ipph

    Stimulant

    Summary PsychonautWiki

    Isopropylphenidate (also known as IPH, IPPH, IPD and IPPD) is a novel lesser-known stimulant of the phenidate chemical class. It is a structural analog of the widely-prescribed ADHD medication methylphenidate. It is a norepinephrine-dopamine reuptake inhibitor (NDRI).

    Dose Information PsychonautWiki TripSit

    ROA Light Common Strong Heavy
    Insufflated 5-10mg 10-20mg 20-35mg 35mg+
    Oral 5-15mg 15-25mg 25-45mg 45mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects PsychonautWiki TripSit

    ROA Onset Comeup Peak Offset After Effects Total
    Insufflated 0-6 min 12-30 min 1-2 hrs 60-90 min 1-8 hrs 3-6 hrs
    Oral 12-30 min 18-42 min 1.5-2.5 hrs 1-2 hrs 1-8 hrs 3-6 hrs

    Effect Profile

    7 reports

    Scores (1–10) curated from multiple sources:

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

    Full methodology

    Stimulant 3.8
    Moderate 4/10

    Strong anxiety/jitters with moderate stimulation and euphoria

    Stimulation / Energy ×3
    6
    stimulation wakefulness alertness enhancement
    Euphoria / Mood Lift ×2
    6
    cognitive euphoria euphoria
    Focus / Productivity ×2
    0
    ⚠ Anxiety / Jitters ×1
    10
    anxiety increased heart rate teeth grinding vasoconstriction
    Based on reports from:
    Erowid Experience Reports PsychonautWiki Isopropylphenidate
    View methodology →

    Tolerance

    Build-up develops over days to weeks of regular use
    Reset 3โ€“7 days for acute tolerance; longer for full reset

    Tolerance Decay

    Full tolerance 2d Half tolerance 7d Baseline ~14d

    Empirically modeled from community stimulant-use patterns; tolerance rises over consecutive days and substantially wanes over 1โ€“2 weeks of abstinence. Data quality is anecdotal; individuals vary widely.

    Cross-Tolerances

    Methylphenidate
    60%
    Other phenidate stimulants (e.g., ethylphenidate, 4F-MPH)
    50%

    Effects Erowid

    Aggregated from 7 Erowid experience reports

    Positive Effects 3

    Focus Enhancement 71.4% 70%
    Stimulation 71.4% 70%
    Euphoria 57.1% 70%

    Adverse Effects 2

    Anxiety 71.4% 70%
    Jaw Clenching 57.1% 70%

    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.

    Erowid 6 reports 5 neutral 1 cautionary visit
    A Social Drug and a Nootropic neutral exp #105594

    I have recently been experimenting with research chemicals and am pleased to say that I have found an online vendor who supplies pure chemicals in discreet packaging. Recently I have tried MPA, ethylphenidate and isopropylphenidate, which are all stimulants similar in effects to amphetamine.

    Liber_Liebe_ · 1 line insufflated / 700 ml oral
    The Cleanest Stimulant I've Come Across neutral exp #109186

    Iย’ve done Isopropylphenidate (IPPH from here on out) a few times before but I feel as though Iย’ve got all I can get out of the substance so I figured Iย’d go ahead and write up a report. Quick history: Been doing drugs for about 3 years now.

    Zirtonic · 30 mg insufflated
    My Medicine neutral exp #115578

    It's worth noting that I'm taking bupropion 150mg by prescription to treat depression. Since it is also an NDRI, I wouldn't be surprised if my doing so colors the experience somewhat, though I believe IPH is more dopaminergic, while bupropion is more noradrenergic.

    wontofDA · 15 - 20 mg oral / 150 mg oral
    One Month as a Daily Supplement neutral exp #111232

    I initially discovered Isopropylphenidate (IPPH) in my research of Methylphenidate (MPH) alternatives. I had taken MPH for about a 2-month span, then I used no stimulants for 6 months. Then I became very interested in the characteristics of IPPH as a daily supplement/ADD treatment.

    Grapes · 30 mg oral / 1 cup oral / repeated vaporized
    It Starts Well but Doesn't Hold Up neutral exp #108688

    I'm an experienced stimulant user. Cocaine, Meth, and all of the prescription amphetamines. It has been over a year since I used any stimulants, here is my take on Isopropylphenidate. This product came in crystal form from a reputable source, with shards that look almost identical to meth.

    MotivationNeeded · 15 mg insufflated / 10 mg oral
    Energy for Everything Else but Actual Work cautionary exp #114647

    "Ritalin" for People Without ADHD Time:8:05pm Background: All substances I have ever consumed were for specific desired effects, I do not consider myself a recreational user to enhance activities/looking for a good time.

    Blank · 3 - 5 mg oral
    Isopropylphenidate's nerd page Pharmacology, chemical data, effect profiles, and more
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    Helpful Links

    ๐Ÿ“˜ Experience Reports ๐Ÿ“– PsychonautWiki ๐Ÿ“– TripSit