Comparison
Piracetam vs Phenotropil (Phenylpiracetam analog)
Piracetam
The original nootropic, developed in 1964 by Romanian chemist Corneliu Giurgea. A cyclic derivative of GABA and the founding member of the racetam family.
Phenotropil (Phenylpiracetam analog)
Russian prescription nootropic; structural analog of phenylpiracetam. Used clinically in Russia for stroke, fatigue, and ADHD.
| Field | Piracetam | Phenotropil (Phenylpiracetam analog) |
|---|---|---|
| Category | racetam | racetam |
| Dose range | 1200–4800mg | 100–200mg |
| Half-life | 5h | 5h |
| Onset | 45min | 30min |
| Evidence | EVIDENCEA | EVIDENCEC |
| Safety | ●●●●● | ●●●○○ |
| Legal (US) | USUnscheduled | USResearch chemical |
| PubMed refs | 1200 | 40 |
The comparison in plain English
Auto-generated from dataPiracetam and Phenotropil (Phenylpiracetam analog) are both in the racetam category respectively. Piracetam The original nootropic, developed in 1964 by Romanian chemist Corneliu Giurgea. Phenotropil (Phenylpiracetam analog) Russian prescription nootropic; structural analog of phenylpiracetam.
Bottom line
Piracetam (evidence A, safety 5/5) has a weaker evidence base than Phenotropil (Phenylpiracetam analog) (evidence C, safety 3/5). Piracetam has the slightly cleaner safety profile. For users new to either, the higher-evidence option is the safer first try.
Choose Piracetam if
Piracetam is the better fit when your goal aligns with its mechanism (Modulates AMPA and NMDA glutamate receptors and enhances acetylcholine signaling via muscarinic receptor allosteric modulation) and the dose range (1200–4800mg) suits your protocol. Half-life is 5h.
Choose Phenotropil (Phenylpiracetam analog) if
Phenotropil (Phenylpiracetam analog) is the better fit when your goal aligns with its mechanism (Closely related to phenylpiracetam — phenyl-substituted piracetam derivative with similar mechanism: glutamatergic modulation, dopaminergic stimulation, and cholinergic enhancement) and the dose range (100–200mg) suits your protocol. Half-life is 5h.