Can you feel a difference within several hours of taking it?

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.

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??

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.

Size of pill compared to a dime?

It's about the length of a dime. A little larger than a vitamin D pill.

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

Product ID: 601897538

Details

Brand
Nootropics
Item form
Capsule
Item package quantity
1
Manufacturer
Nootropics
Package information
Jar

🧠100mg potent cognitive boost

🧪In-house lab tested purity

⚖️20:1 concentrated extract ratio

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¥10683

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In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧠 Elevate your mind, conquer your day — don’t let cognitive edge slip away!

PURE POWER YOU CAN TRUST - Rigorous in-house lab testing guarantees purity and identity for consistent quality.
STRESS LESS ACHIEVE MORE - Adaptogenic properties help maintain healthy stress levels and promote a positive mood.
SHARPER FOCUS SMARTER DAYS - 100mg of premium Polygala tenuifolia extract fuels your brain’s learning and memory circuits.
90 CAPSULES OF DAILY BRAIN FUEL - A convenient 90-count supply designed to seamlessly fit your busy professional lifestyle.
ANCIENT WISDOM MEETS MODERN SCIENCE - 20:1 extract ratio delivers a potent dose of Yuan Zhi, a time-tested cognitive enhancer.

Nootropics Depot Polygala tenuifolia Capsules provide a potent 100mg dose of 20:1 Yuan Zhi extract, clinically tested for purity. Designed to support cognitive function, learning, memory, and healthy stress levels, this adaptogen supplement offers a natural, science-backed way to enhance mental clarity and mood. Packaged in a convenient 90-count capsule format, it’s tailored for professionals seeking a reliable brain boost.

Specifications

ASIN	B06XGPCPZB
Age Range Description	Adults
Best Sellers Rank	#15,940 in Health ( See Top 100 in Health ) #510 in Multiple Vitamin-Mineral Combination Supplements
Brand	Nootropics Depot
Brand Name	Nootropics Depot
Container Type	Jar
Customer Reviews	4.2 out of 5 stars 165 Reviews
Diet Type	Vegan
Dosage Form	Capsule
Flavor	flavorless
Flavour	flavorless
Item Form	Capsule
Item Weight	0.04 Kilograms
Item form	Capsule
Item package quantity	1
Legal Disclaimer	Keep out of reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions, and/or taking prescription drug(s) or OTC medication(s).
Manufacturer	Nootropics Depot
Number of Items	1
Package Quantity	1
Package information	Jar
Total Servings Per Container	90

Reviews

T**I

Good formulation and not easy to find

13.02.2026

A**H

Quality product

29.06.2025

E**D

good

5.03.2026

J**0

Cognitive/memory nootropic, antidepressant

13.03.2020

W**N

Helps stay calm under stress

28.06.2025

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¥10683

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In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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