Educational notice: This guide is for general informational purposes only. It is not medical advice and does not diagnose, treat, cure, or prevent any disease. Consult a licensed clinician if you are pregnant, nursing, have a medical condition, or take medications.
Quick take
- Same family, different molecules: Both are racetam-class compounds, but phenylpiracetam hydrazide is not the same chemical as plain phenylpiracetam (carphedon).
- Phenotropil is a brand name for plain phenylpiracetam in Russia. It is not interchangeable with hydrazide capsules.
- Structural difference: Hydrazide replaces the amide group on the phenylpiracetam backbone. That changes metabolism and may change feel.
- No dose equivalence: 150mg hydrazide is not a substitute for 100mg phenylpiracetam. Start at the labeled dose.
- Nootropix stocks hydrazide only: Phenylpiracetam Hydrazide 150mg Capsules. We do not sell plain phenylpiracetam.
- For mechanism, evidence tiers, safety, and full dosing detail, see our Phenylpiracetam Hydrazide Evidence and Safety Guide.
| Factor | Phenylpiracetam (carphedon) | Phenylpiracetam hydrazide |
|---|---|---|
| Chemical change | Reference amide form (C12H15N2O2) | Amide replaced by hydrazide group (C12H15N3O2) |
| Also called | Carphedon; brand Phenotropil (Russia) | Fonturacetam hydrazide |
| Evidence | More literature than hydrazide (still limited vs piracetam) | Zero human RCTs; preclinical only |
| Typical labeled dose (market) | Often 100mg discussed in forums | Nootropix: 150mg capsules |
| Onset / duration (reported) | 30-60 min / 3-5 h (class range) | 30-60 min / 3-5 h (site canonical) |
| Feel (anecdotal) | Stimulant-adjacent drive and task initiation | Similar class; individual variation reported |
| WADA | Carphedon prohibited in-competition | Verify federation rules for phenylpiracetam-class compounds |
| Nootropix carries | No | Yes (150mg capsules) |
View Phenylpiracetam Hydrazide 150mg Capsules
Contents
- Why buyers confuse these two
- Phenylpiracetam: what the literature discusses
- Phenylpiracetam hydrazide: what you are actually buying
- Amide vs hydrazide: what changes (plain language)
- Onset, duration, and feel (side by side)
- The dosing trap (100mg vs 150mg)
- Which one fits your goal?
- Quality and COA checklist
- FAQ
Why Buyers Confuse These Two
Search listings, Reddit threads, and vendor pages often use "phenylpiracetam" as shorthand for anything in the phenylpiracetam family. That creates a common mistake: assuming a product labeled phenylpiracetam is plain carphedon when it is actually the hydrazide derivative.
Three patterns drive the confusion:
- Listing shorthand: Retailers title hydrazide SKUs "Phenylpiracetam Hydrazide" but shoppers search "phenylpiracetam" and stop reading at the first word.
- Phenotropil nostalgia: People who heard about Russian Phenotropil expect the same compound in every "phenylpiracetam" bottle. Hydrazide is a different molecule.
- Market substitution: When plain phenylpiracetam became harder to source reliably, many vendors shifted to hydrazide without clearly explaining the chemistry change.
They are not interchangeable. Swapping one for the other without understanding the label is how dosing errors and disappointed expectations happen. This comparison is about naming clarity, not declaring a clinical winner.
If you already know you want hydrazide and need safety and evidence depth, start with our Evidence and Safety Guide.
Phenylpiracetam: What the Literature Discusses
Phenylpiracetam (carphedon) is a phenyl-substituted piracetam derivative developed in the Soviet era and discussed for cognitive and physical performance in preclinical work and limited human contexts. It is the reference compound in this two-way comparison.
Phenotropil is the brand name for pharmaceutical phenylpiracetam in Russia. When forums mention Phenotropil, they mean plain phenylpiracetam, not the hydrazide form.
Evidence tier (proxy): Phenylpiracetam has more published material than hydrazide, including animal cognition studies and its documented development for cosmonaut performance research in the 1980s. That literature informs what the phenylpiracetam class may do. It does not prove identical effects for hydrazide.
WADA note: Phenylpiracetam (carphedon) is on the WADA Prohibited List as a specified stimulant in-competition. Athletes should verify federation rules before using any phenylpiracetam-class compound.
Important: Nootropix does not sell plain phenylpiracetam or Phenotropil. This section is educational context only.
Phenylpiracetam Hydrazide: What You Are Actually Buying
Phenylpiracetam hydrazide replaces the amide side chain of phenylpiracetam with a hydrazide group. It was first reported in 1980 as part of a Russian medicinal chemistry series on anticonvulsant racetam derivatives. It is a distinct molecule, sometimes cataloged as fonturacetam hydrazide.
Human data gap: There are zero published randomized controlled trials on phenylpiracetam hydrazide in humans. Preclinical anticonvulsant and neuropharmacology data exist; broad cognitive enhancement claims are not clinically established for this form.
Many vendors now sell hydrazide when plain phenylpiracetam is difficult to source. That supply shift does not mean hydrazide is a drop-in replacement at the same milligram dose.
Nootropix is the compound in this comparison that we stock: Phenylpiracetam Hydrazide 150mg Capsules, pre-labeled for consistent dosing on peak-demand days.
For mechanism, dosing, safety flags, and the full evidence breakdown, see our Phenylpiracetam Hydrazide Evidence and Safety Guide.
Amide vs Hydrazide: What Changes (Plain Language)
Plain phenylpiracetam carries an amide group on its acetic acid side chain (molecular formula C12H15N2O2). Phenylpiracetam hydrazide swaps that amide for a hydrazide (C12H15N3O2). One extra nitrogen atom changes how the molecule interacts with enzymes and receptors.
Practical implications discussed in pharmacology (not proven identically for every user):
- Metabolism pathways may differ from plain phenylpiracetam
- Receptor binding profiles may not match carphedon 1:1
- Onset, peak, and duration may shift person to person
What we do not publish: A potency conversion chart (for example, "100mg phenylpiracetam = X mg hydrazide"). No robust head-to-head human trial supports that math. Start at the labeled dose on the product you actually hold.
For racetam family context beyond this pair, see 5 Best Racetams and our Racetams 101 page.
Onset, Duration, and Feel (Side by Side)
Onset and duration (reported ranges, not clinical guarantees):
- Phenylpiracetam (class reports): Onset often cited 30-60 minutes; duration commonly reported 3-5 hours in racetam discussions.
- Phenylpiracetam hydrazide (Nootropix-aligned): Onset 30-60 minutes; duration 3-5 hours reported. Morning or early afternoon dosing; situational use only.
Feel categories (experiential, not clinical outcomes):
- Phenylpiracetam: Stimulant-adjacent drive, task initiation, and mental stamina on demanding days (anecdotal).
- Hydrazide: Many users describe similar clean focus and motivation; some report a milder edge, others report comparable drive with different timing. Individual results vary.
Stacking note: Racetam-class compounds often pair with a choline donor. Consider Alpha-GPC 250mg to support tolerance and reduce headache risk.
What this comparison does NOT mean: Neither compound should be used to treat ADHD, epilepsy, or any medical condition without qualified supervision.
The Dosing Trap (100mg vs 150mg)
The most common practical error: assuming forum doses for plain phenylpiracetam (often discussed around 100mg) map directly onto hydrazide capsules.
Why this fails:
- Different molecules may have different effective ranges
- Forum doses for carphedon are not clinical standards for hydrazide
- Vendor capsules are pre-set (Nootropix: 150mg per cap) to reduce measurement error
Practical rules for Nootropix hydrazide:
- Start with one 150mg capsule; assess response before increasing
- Use on peak-demand days only; not for daily rotation
- Dose before 2 PM to protect sleep
- Pair with choline; avoid stacking multiple stimulants on day one
Powder users who want titration can see Phenylpiracetam Hydrazide Powder. Most buyers prefer labeled capsules.
Shop Phenylpiracetam Hydrazide 150mg Capsules
Which One Fits Your Goal?
| Your goal | Discussion |
|---|---|
| Specifically want Phenotropil / plain carphedon | That is a different SKU than hydrazide. Verify the label says phenylpiracetam (amide), not hydrazide. Nootropix does not stock it. |
| Understand what "phenylpiracetam" listings actually contain | Read the full compound name. If it says hydrazide, treat it as hydrazide. |
| Peak-demand racetam day from a verified vendor | Hydrazide 150mg caps; start 1 cap AM, situational use. See Evidence and Safety Guide. |
| Athlete / tested sport | Carphedon is WADA-prohibited in-competition. Verify rules for phenylpiracetam-class compounds before use. |
| Verifiable product identity and batch COA | Choose vendors that name hydrazide explicitly on the label and COA, not vague "phenylpiracetam blend." |
| Broader racetam education | Racetams 101 covers aniracetam, fasoracetam, pramiracetam, and hydrazide in stock. |
Shop Phenylpiracetam Hydrazide 150mg Capsules
Quality and COA Checklist
When human trial data is thin, purity and identity verification become the quality signal. This matters especially when vendors blur "phenylpiracetam" and "hydrazide" on labels.
What to check on any phenylpiracetam hydrazide product:
- COA identity line says phenylpiracetam hydrazide, not generic "phenylpiracetam" only
- Purity percentage stated with method (HPLC, LC-MS, or equivalent)
- Named independent lab (not self-reported only)
- Batch or lot number ties your unit to a specific test
- Label shows exact mg per capsule (150mg, not proprietary blend)
Request or download the batch COA from the product page before relying on any vendor claim.
Nootropix Phenylpiracetam Hydrazide 150mg Capsules are in stock from 275 AED. Ships same day from Dubai.
Shop Phenylpiracetam Hydrazide 150mg Capsules
For related in-stock focus tools, browse the Focus collection.
FAQ
Are phenylpiracetam and phenylpiracetam hydrazide the same thing?
No. They share a racetam backbone, but hydrazide replaces the amide group. They are different molecules with different evidence profiles.
Is Phenotropil the same as hydrazide?
No. Phenotropil is a brand name for plain phenylpiracetam (carphedon) in Russia. Hydrazide is a separate derivative.
Is hydrazide stronger than phenylpiracetam?
Potency has not been established in robust head-to-head human trials. Anecdotal reports vary. Do not assume hydrazide is stronger, weaker, or equivalent at the same milligram dose.
Can I take 100mg hydrazide because forums dose phenylpiracetam at 100mg?
No cross-compound dose conversion is clinically established. Nootropix sells 150mg capsules; start with one labeled cap and assess response. See The Dosing Trap.
Which one does Nootropix sell?
Phenylpiracetam hydrazide only: 150mg capsules and powder. We do not sell plain phenylpiracetam.
Where do I read dosing and safety for hydrazide?
See our Phenylpiracetam Hydrazide Evidence and Safety Guide.
This is education, not medical advice. These statements have not been evaluated by regulatory authorities and are not intended to diagnose, treat, cure, or prevent any disease. Not for use by anyone under 18, pregnant, or nursing. Consult a qualified clinician if you take other medication or have a health condition.
