Well I'm taking a break (I guess) from 'researching' - it seems like about time I contributed something to the community. First a bit of history - I have done weed, LSD, mushrooms, xtc, special k, (BZP), perscription pain killers/muscle relaxers, and a whole bunch of herbal assortments (most of which were not worth my...
BZP
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 4 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 4 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- classified Research-chemical
Aliases: A2, Pep x, Frenzy, Legal x, Nemesis
Summary
BZP was marketed as a legal alternative to amphetamines and MDMA in the early 2000s but is now illegal in many countries. It is approximately 10% the potency of dexamphetamine. Side effects include anxiety, insomnia, nausea, headaches, and seizures at high doses.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 40-70mg | 70-100mg | 100-130mg | 130mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 30-90 min | 30-60 min | 2-4 hrs | 2-4 hrs | 4-6 hrs |
Effect Profile
30 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Validated against 30 Erowid trip reports
- Weighted by importance: core (×3), major (×2), minor (×1)
Stimulant
7.0
Strong+
7/10
Strong stimulation, anxiety/jitters, and euphoria with mild focus
Stimulation / Energy
×3
10
stimulation
increased energy
wakefulness
alertness enhancement
Euphoria / Mood Lift
×2
8
euphoria
Focus / Productivity
×2
5
focus enhancement
Anxiety / Jitters
×1
10
anxiety
increased heart rate
teeth grinding
bruxism
vasoconstriction
Based on reports from:
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
2d
Half tolerance
3d
Baseline
~18d
Acute tolerance: develops within a single session — the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Tolerance patterns inferred from stimulant-like use; high uncertainty. Many users report diminished effects after consecutive-day use and substantial recovery after 1–2 weeks off. Avoid frequent redosing within a single session to limit adverse events.
Cross-Tolerances
Effects
Aggregated from 30 Erowid experience reports
Positive Effects 8
Stimulation
56.7%
70%
Euphoria
56.7%
70%
Empathy
46.7%
70%
Music Enhancement
36.7%
70%
Tactile Enhancement
30.0%
70%
Color Enhancement
20.0%
70%
Body High
20.0%
70%
Focus Enhancement
13.3%
70%
Adverse Effects 8
Anxiety
40.0%
70%
Headache
36.7%
70%
Confusion
23.3%
70%
Nausea
23.3%
70%
Jaw Clenching
16.7%
70%
Sweating
13.3%
70%
Increased Heart Rate
10.0%
70%
Pupil Dilation
10.0%
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 8 reports 2 positive 6 neutral visit
Setting: Mostly in my room, listening to music. No prescription meds. I live in the countryside and have a beautiful forest to stare into when looking out of my window. I am however extremely thin due to my metabolism. My body simply does not absorb as many nutrients as others.
I hope that in writing this people will think twice before deciding to go off and be smart little pricks. I've only very recently come to admit this to myself... How BZP, a stimulant, has played a significant role in who I am today.
Dose: 200 mg BZP (benzylpiperazine) Setting: I'm on a two hour drive to visit my bf. Experience: with most other drugs, much experience with stimulants. First time with BZP. Note: I am taking corticosteroids for an allergic reactions (40 mg prednisone/day).
I've tried BZP a few times before at doses between 150mg - 200mg and thought it was basically similar to Adderall except maybe a little bit more fun and a little bit less focused. Anyway, today I am going to eat some with the intent of practicing guitar for a few hours.
I have been experimenting with BZP HCl recently to see if it would be a mild substitute for ecstasy or maybe even some sort of speed. I have never tried speed (caffeine) before but I think I have a good idea what it would be like.
Tending toward hypersomnolent depression, I've always gravitated to stimulants as a partial (and very imperfect) solution. I'm an avowed caffeine junkie, and I use ephedrine sporadically. So, BZP (1-Benzylpiperazine/N-Benzylpiperazine) seemed like a nice candidate for exploration.
Well i hadn't really heard of BZP before a guy i know told me that he had 100 g. of the stuff, freebase crystallized to HCl. I thought that i might as well try it and bought 200 mg from him. I'm pretty skinny and sensitive to some drugs so i asked him to split it in 2 capsules of 100 mg.
Bluelight 3 threads 3 neutral visit
Long time lingerer...First time poster.Background: Been interested in experimenting with piperazines for a long time. Came across 1 gram, and decided to give it a go.
Dose: 200 mg BZP i.e. benzylpiperazine Setting: I'm on a two hour drive to visit my bf. Experience: with most other drugs, much experience with stimulants. First time with BZP. Note: I am taking corticosteroids for an allergic reactions (40 mg prednisone/day).
I've tried BZP a few times before at doses between 150mg - 200mg and thought it was basically similar to adderall except maybe a little bit more fun and a little bit less focused. Anyway, today I am going to eat some with the intent of practicing guitar for a few hours.
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