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.
Isopropylphenidate
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- toxicity data (PsychonautWiki)
- classified Tentative
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- toxicity data (PsychonautWiki)
- classified Tentative
- classified Research-chemical
Aliases: ipd, iph, ipp, ippd, ipph
Summary
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
| 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
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Insufflated | 0-6 min | 12-30 min | 1-2 hrs | 60-90 min | 3-6 hrs |
| Oral | 12-30 min | 18-42 min | 1.5-2.5 hrs | 1-2 hrs | 3-6 hrs |
Effect Profile
7 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
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:
Import into PsychonautWiki Journal
The PsychonautWiki Journal app includes Isopropylphenidate, but its built-in data can be thinner than ours. Importing this file adds a separate "Isopropylphenidate (Substance Search)" custom substance with our dose ranges, durations and tolerance, so you can log against whichever you prefer.
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Import this file as custom substances
and you get "Isopropylphenidate (Substance Search)" with every
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Android (v15+); the format is confirmed by the app's
developer.
Ranges are harm-reduction guidance, not a prescription.
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3โ7 days for acute tolerance; longer for full reset
Tolerance Decay
Full tolerance
2d
Half tolerance
7d
Baseline
~14d
Acute tolerance: develops within a single session โ the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Empirically modeled from community stimulant-use patterns; tolerance rises over consecutive days and substantially wanes over 1โ2 weeks of abstinence. Data quality is anecdotal; individuals vary widely.
Cross-Tolerances
Effects
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. Tags summarise each author's own verdict — how reports are classified.
Erowid 6 reports 1 positive 4 neutral 1 cautionary visit
Iยve done Isopropylphenidate (IPPH from here on out) a few times before but I feel as though Iยve got all I can get out of the substance so I figured Iยd go ahead and write up a report. Quick history: Been doing drugs for about 3 years now.
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.
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.
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.
"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.
Isopropylphenidate's nerd page
Pharmacology, chemical data, effect profiles, and more
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