---
product_id: 601897538
title: "Nootropics Depot Polygala tenuifolia Capsules | 100mg | 90 Count | 20:1 Extract | Yuan Zhi | Promotes Cognitive Function, Learning and Memory | Supports Healthy Stress Levels | Adaptogen Supplement"
brand: "nootropics depot"
price: "₨25762"
currency: LKR
in_stock: true
reviews_count: 5
category: "Nootropics Depot"
url: https://www.desertcart.lk/products/601897538-nootropics-depot-polygala-tenuifolia-capsules-100mg-90-count-20-1
store_origin: LK
region: Sri Lanka
---

# Lab-tested purity & identity 100mg potent 20:1 extract Supports healthy stress & mood Nootropics Depot Polygala tenuifolia Capsules | 100mg | 90 Count | 20:1 Extract | Yuan Zhi | Promotes Cognitive Function, Learning and Memory | Supports Healthy Stress Levels | Adaptogen Supplement

**Brand:** nootropics depot
**Price:** ₨25762
**Availability:** ✅ In Stock

## Summary

> 🧠 Elevate your brain game — because your mind deserves the best!

## Quick Answers

- **What is this?** Nootropics Depot Polygala tenuifolia Capsules | 100mg | 90 Count | 20:1 Extract | Yuan Zhi | Promotes Cognitive Function, Learning and Memory | Supports Healthy Stress Levels | Adaptogen Supplement by nootropics depot
- **How much does it cost?** ₨25762 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/601897538-nootropics-depot-polygala-tenuifolia-capsules-100mg-90-count-20-1)

## Best For

- nootropics depot enthusiasts

## Why This Product

- Trusted nootropics depot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Experts:** Preferred by researchers and nootropic enthusiasts for consistent, reliable results.
- • **Neuroprotective Edge:** Promotes BDNF production to enhance brain health and cognitive longevity.
- • **Cognitive Clarity Boost:** Harness the power of 20:1 Polygala extract for sharper focus and memory.
- • **Stress-Resilient Mindset:** Adaptogen formula designed to support balanced stress levels and uplift mood.
- • **Scientifically Verified Quality:** In-house and third-party lab tested to guarantee purity and potency.

## Overview

Nootropics Depot Polygala tenuifolia Capsules deliver a concentrated 20:1 extract at 100mg per dose, designed to enhance cognitive function, memory, and learning while supporting healthy stress levels. This adaptogen supplement is rigorously lab-tested for purity and identity, making it a trusted choice for professionals seeking mental clarity and mood balance.

## Description

Product includes one jar of Polygala tenuifolia 20:1 Extract 100mg Capsules. This product is not intended to diagnose, treat, cure, or prevent any disease. It has not been approved, nor have these statements been evaluated, by the FDA.

Review: First and foremost, Nootropics Depot is an exemplary brand that utilizes third party testing and produces only the highest quality supplements. I’ve trusted them for years (I am a dietetics researcher, if that lends my opinion any credit). As for the supplement itself, Polygala tenuifolia (sometimes referred to as Yuan Zhi) is one of the most potent ‘nootropic’ supplements I’ve tried. A good amount of scientific evidence supports polygala as an antidepressant, anti-anxiety, and cognition improving plant. Clinical studies show evidence of reuptake inhibition of serotonin, dopamine, and norepinephrine. Polygala has been shown to help mild depression very quickly, as well as chronic stress. Another mechanism of action seems to be related to NMDA antagonism (similar to newly available ketamine therapy). Polygala also shows evidence of increasing BDNF, or brain-derived neurotrophic factor, increasing cognition, memory, and anti-inflammatory neuroprotection. I recommend trying the supplement, it seems to have helped quite a bit with brain fog and chronic anxiety.
Review: Mood showed definite signs of improvement. Worth giving a try if you are curious. I’ve bought numerous products from nootropics depot and I can say that the quality is always great

## Features

- Polygala tenuifolia Capsules | 100mg | 90 Count | 20:1 Extract | Also Known As: Yuan Zhi
- Promotes Cognitive Function, Learning and Memory
- Supports Healthy Stress Levels and Positive Mood
- Adaptogen Supplement
- In-House Lab Tested for Purity and Identity

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XGPCPZB |
| ASIN  | B06XGPCPZB |
| Age Range Description | Adults |
| Best Sellers Rank | #96,458 in Health ( See Top 100 in Health ) #2,699 in Multiple Vitamin-Mineral Combination Supplements |
| Brand | Nootropics Depot |
| Customer Reviews | 4.2 4.2 out of 5 stars (163) |
| Customer reviews | 4.2 4.2 out of 5 stars (163) |
| Date First Available | 29 January 2021 |
| Format | Capsule |
| Is Discontinued By Manufacturer  | No |
| Item model number  | ND1153A |
| Manufacturer  | Nootropics Depot |
| Product Dimensions  | 7.62 x 10.16 x 7.62 cm; 36 g |

## Product Details

- **Brand:** Nootropics Depot
- **Item form:** Capsule
- **Item package quantity:** 1
- **Manufacturer:** Nootropics Depot
- **Package information:** Jar

## Images

![Nootropics Depot Polygala tenuifolia Capsules | 100mg | 90 Count | 20:1 Extract | Yuan Zhi | Promotes Cognitive Function, Learning and Memory | Supports Healthy Stress Levels | Adaptogen Supplement - Image 1](https://m.media-amazon.com/images/I/61sTxJEEnTL.jpg)

## Questions & Answers

**Q: If each pill is a 100mg and contains a 20:1 extract, does that mean each pill is equivalent to 2g of Polygala root?**
A: Correct

**Q: Can you feel a difference within several hours of taking it?**
A: It's not a noticeable difference but definitely
feel like it's working. It's almost as if it just makes your day 5-10% better. No, it's not like taking a klonopin. The half life is relatively shorts so you're supposed to take it 3 times a day if that's what you need. I've only been taking it once as needed if I'm stressed because it's supposed to ASSIST you with stress. Remember to avoid dependency of needing it to cope.

**Q: This product uses corn Ethanol (an oxidizer) as an extractor and two fillers. Of the 180 caps,18 grams, 2/3rds are fillers. Is this worth it??**
A: Yes. Nootropics Depot is very reputable, and uses scientifically-backed extraction methods (alcohol in this case), formulas, and is third-party verified. They have quite the following on Reddit. I trust them above most supplement companies. I found this supplement very effective for brain fog, stress, and general mood boosting effects.

**Q: Size of pill compared to a dime?**
A: It's about the length of a dime. A little larger than a vitamin D pill.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***0 on 13 March 2020*

First and foremost, Nootropics Depot is an exemplary brand that utilizes third party testing and produces only the highest quality supplements. I’ve trusted them for years (I am a dietetics researcher, if that lends my opinion any credit). As for the supplement itself, Polygala tenuifolia (sometimes referred to as Yuan Zhi) is one of the most potent ‘nootropic’ supplements I’ve tried. A good amount of scientific evidence supports polygala as an antidepressant, anti-anxiety, and cognition improving plant. Clinical studies show evidence of reuptake inhibition of serotonin, dopamine, and norepinephrine. Polygala has been shown to help mild depression very quickly, as well as chronic stress. Another mechanism of action seems to be related to NMDA antagonism (similar to newly available ketamine therapy). Polygala also shows evidence of increasing BDNF, or brain-derived neurotrophic factor, increasing cognition, memory, and anti-inflammatory neuroprotection. I recommend trying the supplement, it seems to have helped quite a bit with brain fog and chronic anxiety.

### ⭐⭐⭐⭐⭐ Review
*by A***H on 29 June 2025*

Mood showed definite signs of improvement. Worth giving a try if you are curious. I’ve bought numerous products from nootropics depot and I can say that the quality is always great

### ⭐⭐⭐⭐⭐ Review
*by T***I on 13 February 2026*

I think it helped my sleep.. let's see. I do have a pretty serious sleep problem, likely coupled with anxiety

## Frequently Bought Together

- Nootropics Depot Polygala tenuifolia Capsules | 100mg | 90 Count | 20:1 Extract | Yuan Zhi | Promotes Cognitive Function, Learning and Memory | Supports Healthy Stress Levels | Adaptogen Supplement
- Nootropics Depot 4'-DMA-7,8-DHF Nutritional Supplement Capsules | 10mg | 30 Count | 4'-DMA-7,8-Dihydroxyflavone
- Nootropics Depot Sabroxy® Tablets | 100mg | 90 Count | Minimum 10% Oroxylin-A | Oroxylum indicum | May Help Promote Focus & Motivation | May Help Promote Cognitive Function

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.lk/products/601897538-nootropics-depot-polygala-tenuifolia-capsules-100mg-90-count-20-1](https://www.desertcart.lk/products/601897538-nootropics-depot-polygala-tenuifolia-capsules-100mg-90-count-20-1)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-11*