What it is
Yuan Zhi (Polygala) is a nootropic supplement derived from the root of Polygala tenuifolia, traditionally used in Chinese medicine to support cognitive function and promote calmness. It is available in capsule form for adult use.
Supplement · Nootropic & Choline
Yuan Zhi (Polygala)
400 mg · vegan · gluten-free · 90 caps
memory-lossbrain-foganxiety brainliver
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How it works
Yuan Zhi contains saponins and polygalasaponins that may interact with neurotransmitter systems, including GABA and acetylcholine, potentially influencing memory, learning, and anxiety. Its effects are dose-dependent and typically observed with consistent use over several weeks.
Who should take it
Adults looking to address brain fog, memory decline, attention difficulty. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Avoid / careful
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
When to take it
Morning
Noon
Evening
Night
How to take it
With food
Empty stomach
Before food
FAQs
Frequently asked
How long does it take to see effects from Yuan Zhi?
Noticeable cognitive effects typically emerge within 2 to 8 weeks of consistent daily use.
Can Yuan Zhi be taken with other supplements?
Yuan Zhi can be layered into a broader protocol, but consult a clinician if you are on prescription medications affecting similar pathways.
What are the main active compounds in Yuan Zhi?
Key active compounds include saponins and polygalasaponins, which are believed to contribute to its nootropic and anxiolytic effects.
Research
6 studies · 2010–2024
Evidence grade
ABCD
C · C · emerging-to-moderate human evidence for brain fog and memory concerns
From the blog
Editorial notes
SacredBod's longer take on Yuan Zhi (Polygala) — context the structured blocks above don't capture.
About Yuan Zhi (Polygala)
Yuan Zhi (Polygala) is a nootropic & choline supplement used to support brain fog and memory concerns. Polygala root for memory, calm and sleep. It is available in capsule form and dosed for adults in India and internationally. As a tcm-tradition entry in the SacredBod catalog, it is positioned as a single-ingredient option that can be used on its own or layered into a broader protocol. Yuan Zhi (Polygala) works through the mechanisms characteristic of its class — see the mechanism and research sections for detail. It primarily acts on the brain, nervous system, and effects are dose-dependent, typically becoming measurable within 2-8 weeks for noticeable cognitive effects. Consistency matters more than dose size for this category.
Evidence
Yuan Zhi (Polygala) carries an evidence grade of C in the SacredBod catalog, reflecting emerging human evidence for brain fog and memory concerns. Polygala root for memory, calm and sleep. Benefits are cumulative rather than immediate, typically becoming noticeable within 2-8 weeks for noticeable cognitive effects, and individual response varies.
Dosing
A typical dose is 400 mg, taken with food, usually in the morning. Start at the lower end, assess tolerance, and stay consistent; more is not automatically better.
Cautions
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
Who it’s for
Adults looking to address brain fog, memory decline, attention difficulty. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
As part of the Nootropic & Choline category, Yuan Zhi (Polygala) can be used on its own or layered into a broader protocol — see the Goes with panel for evidence-aligned pairings.
Added to your stack.