Comparison
Bacopa Monnieri vs Polygala (Yuan Zhi)
Bacopa Monnieri
Ayurvedic herb (Bacopa monnieri) with the strongest natural-nootropic evidence base for memory acquisition and retention. The active bacosides increase dendritic branching in the hippocampus over weeks of dosing. Effects are slow but durable; expect 8–12 weeks before full effect.
Polygala (Yuan Zhi)
Chinese herb (Polygala tenuifolia) traditionally used for memory, sleep, and emotional balance. Modulates serotonin and acetylcholine.
| Field | Bacopa Monnieri | Polygala (Yuan Zhi) |
|---|---|---|
| Category | adaptogen | adaptogen |
| Dose range | 300–600mg | 200–600mg |
| Half-life | 4h | — |
| Onset | — | — |
| Evidence | EVIDENCEA | EVIDENCEC |
| Safety | ●●●●● | ●●●●○ |
| Legal (US) | USOTC | USOTC |
| PubMed refs | 540 | 280 |
The comparison in plain English
Auto-generated from dataBacopa Monnieri and Polygala (Yuan Zhi) are both in the adaptogen category respectively. Bacopa Monnieri Ayurvedic herb (Bacopa monnieri) with the strongest natural-nootropic evidence base for memory acquisition and retention. Polygala (Yuan Zhi) Chinese herb (Polygala tenuifolia) traditionally used for memory, sleep, and emotional balance.
Bottom line
Bacopa Monnieri (evidence A, safety 5/5) has a weaker evidence base than Polygala (Yuan Zhi) (evidence C, safety 4/5). Bacopa Monnieri has the slightly cleaner safety profile. For users new to either, the higher-evidence option is the safer first try.
Choose Bacopa Monnieri if
Bacopa Monnieri is the better fit when your goal aligns with its mechanism (Active bacosides A and B increase dendritic branching in the CA3 region of the hippocampus, the structural change that underlies improved memory consolidation) and the dose range (300–600mg) suits your protocol. Half-life is 4h.
Choose Polygala (Yuan Zhi) if
Polygala (Yuan Zhi) is the better fit when your goal aligns with its mechanism (Tenuifolin and onjisaponin B inhibit acetylcholinesterase) and the dose range (200–600mg) suits your protocol. Half-life is —h.