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Polygala Capsules

20:1 root extract that supports cognitive function, focus, and healthy stress levels with unique calming yet stimulating effects.

(27 Reviews) Write a Review

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Polygala Capsules

20:1 root extract that supports cognitive function, focus, and healthy stress levels with unique calming yet stimulating effects.

(27 Reviews) Write a Review

View All Reviews

Available in multiple forms! Click Here for:
  • 20:1 Concentrated Root Extract
  • Dual Stimulating Yet Calming Effects
  • Supports Neuroplasticity and Memory
  • Traditional Yuan Zhi Adaptogen

3rd Party Lab Tested & Verified

See Why ND Polygala Is The Best

Updated On: 05/12/2026

$19.99

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Benefits

When You'll Notice Effects

2-3 Weeks (With Immediate Effects)

  • Memory Memory
  • Physical Energy Physical Energy
  • Focus Focus
  • Mood Mood

Why ND Polygala?

The ONLY Polygala standardized to 20:1 extract concentration
test

How To Take

Dose
Dose

100mg (One Capsule)

Timing
Timing

Flexible

How to Take
How to Take

With Or Without Food

Frequency
Frequency

1-3 Times Daily

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  • About Polygala Capsules

    Polygala tenuifolia is a traditional adaptogenic herb that delivers uniquely balanced effects for modern cognitive enhancement. Our 20:1 dual water/ethanol extract concentrates the root's active compounds, including bioactive tenuifolin, to support focus and calm mental energy without the jittery overstimulation typical of stimulants. This versatile botanical supports neuroplasticity, healthy stress response, and cognitive function in one comprehensive formula.

    Our Polygala Story

    Most cognitive enhancers force you to choose between stimulation and calm, but traditional Chinese medicine practitioners have long understood that Polygala tenuifolia (Yuan Zhi) offers both effects in perfect balance. We recognized that this unique property could solve a common problem for modern users who wanted mental clarity without compromising their ability to wind down later in the day.

    We developed our Polygala extract using a specialized dual water/ethanol extraction process to capture both the water-soluble and fat-soluble compounds that contribute to its distinctive effects. Our 20:1 concentration ratio ensures you get therapeutic levels of the key bioactives, including the tenuifolin compound responsible for its calming effects that naturally outlast the initial stimulation. This careful extraction and standardization delivers the full spectrum of benefits that have made Yuan Zhi a cornerstone of traditional cognitive enhancement for over 2,000 years.

    Benefits

    • Supports Memory: Polygala promotes neuroplasticity by supporting healthy levels of brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF), which are essential for forming new neural connections and maintaining existing memories.
    • Promotes Healthy Energy Levels: Unlike stimulants that can cause jitters, Polygala delivers balanced energy through its combination of stimulating and calming effects that work together.
    • Promotes Focus: Users report improved spatial awareness and organization alongside enhanced concentration, making Polygala effective for tasks requiring sustained mental attention without overstimulation.
    • Helps Support Mood: The herb's calming effects often outlast its stimulating properties, promoting feelings of well-being and balanced mood throughout the day.

    Polygala's tenuifolin content also supports sleep quality, making it a versatile adaptogen that enhances daytime performance while promoting restful recovery at night.

    Quality and Standardization

    • 20:1 Concentration Ratio: Our Polygala tenuifolia capsules contain a concentrated 20:1 extract, meaning 20 parts raw root material are reduced to 1 part final extract for enhanced potency.
    • Dual Water/Ethanol Extraction: We utilize a specialized dual extraction process that captures both water-soluble and alcohol-soluble bioactive compounds, including the key constituent tenuifolin responsible for Polygala's unique effects.
    • Third-Party Lab Testing: Each batch undergoes rigorous testing by independent laboratories to verify product purity and identity, ensuring you receive exactly what's on the label.
    • 100mg Standardized Capsules: Every capsule delivers precisely 100mg of our 20:1 Polygala tenuifolia root extract in convenient capsule form for consistent dosing and optimal bioavailability.

    Mechanism of Action

    • BDNF and NGF Elevation: Polygala tenuifolia supports elevated levels of brain-derived neurotrophic factor and nerve growth factor, two critical proteins that regulate neuroplasticity and enable the brain's ability to form new neural connections and adapt to changing cognitive demands.
    • Tenuifolin Activity: The bioactive compound tenuifolin found in Polygala root extracts appears to modulate sleep-wake cycles and provides the calming effects that balance the herb's stimulating properties, creating its unique dual-phase cognitive support profile.
    • Adaptogenic Stress Response: Polygala functions as an adaptogen by helping regulate the hypothalamic-pituitary-adrenal axis, supporting the body's natural stress response while maintaining steady energy levels without the overstimulation associated with traditional stimulants.
    • Cholinergic System Support: Research suggests Polygala may enhance cholinergic neurotransmission, supporting acetylcholine activity in brain regions associated with spatial awareness, organization, and cognitive processing speed.

    Overview of the Science

    Recent research reveals that Polygala tenuifolia's mechanisms extend beyond traditional adaptogen activity through specific bioactive compounds that modulate stress response pathways. Studies suggest the extract's saponins and oligosaccharides work synergistically to support healthy cortisol patterns while promoting balanced neurotransmitter activity [1]. The tenuifolin content appears particularly important for respiratory wellness, with preliminary research indicating potential benefits for healthy lung function and respiratory comfort during seasonal challenges.

    The extract's unique dual-phase effects stem from its complex phytochemical profile, which includes polygalasaponins that may influence cholinergic activity and support spatial cognitive function. Unlike single-target compounds, Polygala's multiple bioactive constituents appear to work through complementary pathways that support both immediate alertness and sustained cognitive endurance. Research suggests these compounds may help maintain healthy inflammatory responses in neural tissue while supporting the brain's natural repair mechanisms. The traditional use of Yuan Zhi for "calming the spirit" aligns with modern findings that the extract supports healthy GABA receptor function alongside its stimulating properties.

    [1] Kim SH et al. Int J Mol Sci. 2017;18(1):190.

    Ingredients

    Polygala tenuifolia:

    • Polygala tenuifolia root extract
    • 20:1 dual water/ethanol extraction
    • 100mg per capsule

    This 20:1 concentration represents a substantial reduction from raw plant material to finished extract, ensuring each capsule delivers concentrated bioactive compounds that would require consuming significantly larger amounts of raw root to achieve. The dual extraction method captures both water-soluble and alcohol-soluble constituents, creating a comprehensive profile that mirrors traditional preparation methods while meeting modern potency standards for cognition and memory support.

  • Frequently asked questions

    1. Can I stack Polygala with other nootropics?

      Yes, Polygala stacks well with other nootropics due to its balanced calming yet stimulating profile. It pairs particularly well with choline sources, and other adaptogens without causing overstimulation. Our 20:1 extract's unique dual-phase effects complement rather than compete with most cognitive enhancers.

    2. How much Polygala should I take daily?

      Our Polygala capsules contain 100mg of 20:1 extract per serving, and we recommend taking 1-3 capsules daily depending on your individual needs. Most people start with one capsule to assess tolerance, then adjust upward as needed. The extract can be taken with or without food and provides both immediate effects and builds additional benefits over 2-3 weeks of consistent use.

    3. How does Polygala work for focus and calm?

      Polygala works through bioactive compounds including tenuifolin and saponins that modulate stress response pathways while promoting balanced neurotransmitter activity. This dual-action mechanism supports calm mental energy and focus without the jittery overstimulation typical of traditional stimulants. Our 20:1 extract concentrates these active compounds to deliver uniquely balanced cognitive enhancement effects.

    4. Does Polygala have any side effects?

      Polygala tenuifolia is generally well-tolerated with minimal reported side effects when taken at recommended doses. Some users may experience mild digestive upset if taken on an empty stomach, which is why we suggest taking it with food if you have a sensitive stomach. Our 20:1 extract is standardized for consistency and purity to minimize any potential adverse reactions.

    5. Why choose Nootropics Depot's Polygala extract?

      Our Polygala extract uses a 20:1 dual water/ethanol extraction method that concentrates bioactive compounds like tenuifolin more effectively than standard single-solvent extracts. We third-party test every batch for potency and purity, ensuring consistent levels of the saponins and oligosaccharides that research shows are responsible for Polygala's cognitive and stress-supporting effects. This concentrated formula delivers the traditional benefits of Polygala tenuifolia in a standardized, reliable dose.

    6. Does Polygala work better alone or stacked?

      Polygala works well both alone and stacked, offering flexibility based on your goals. Many users find it pairs excellently with other nootropics since its unique calming-yet-stimulating profile complements rather than competes with other cognitive enhancers. For beginners, we recommend starting with Polygala alone to assess your individual response before adding other compounds.

    7. What makes Nootropics Depot's Polygala extract different?

      Our Polygala extract is a concentrated 20:1 dual water/ethanol extraction that preserves both water-soluble and alcohol-soluble compounds, including bioactive tenuifolin. This dual-phase extraction method captures a broader spectrum of active saponins and oligosaccharides compared to single-solvent extracts. We test every batch for purity and concentration to ensure consistent quality.

    8. Is Nootropics Depot's Polygala 20:1 extract standardized?

      Our Polygala extract is a standardized 20:1 dual water/ethanol extract that concentrates the root's active compounds, including bioactive tenuifolin. We use this specific extraction ratio to ensure consistent potency of the key saponins and oligosaccharides that deliver Polygala's cognitive and stress-supporting effects. Every batch undergoes rigorous testing to verify the concentration and purity of these bioactive compounds.

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Polygala Capsules

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