---
product_id: 622613095
title: "Magnesium L-Threonate Complex with Apigenin and L-theanine, 90 Capsules, Patented Magtein Supplement"
brand: "why not natural"
price: "¥10091"
currency: JPY
in_stock: true
reviews_count: 8
category: "Why Not Natural"
url: https://www.desertcart.jp/products/622613095-magnesium-l-threonate-complex-with-apigenin-and-l-theanine-90
store_origin: JP
region: Japan
---

# Pure, no fillers or additives Supports deep, restful sleep Crosses blood-brain barrier efficiently Magnesium L-Threonate Complex with Apigenin and L-theanine, 90 Capsules, Patented Magtein Supplement

**Brand:** why not natural
**Price:** ¥10091
**Availability:** ✅ In Stock

## Summary

> 🧠 Elevate your mind, calm your day, and own tomorrow.

## Quick Answers

- **What is this?** Magnesium L-Threonate Complex with Apigenin and L-theanine, 90 Capsules, Patented Magtein Supplement by why not natural
- **How much does it cost?** ¥10091 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/622613095-magnesium-l-threonate-complex-with-apigenin-and-l-theanine-90)

## Best For

- why not natural enthusiasts

## Why This Product

- Trusted why not natural brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleep Like a Pro:** Clinically supported ingredients work together to calm your nervous system, helping you achieve deeper, more restorative sleep.
- • **Calm Focus Formula:** L-theanine promotes alpha brain waves, delivering a relaxed yet razor-sharp mental state to power through your day.
- • **Neuroprotective Synergy:** Apigenin teams up with magnesium and L-theanine to safeguard long-term brain health and cognitive resilience.
- • **Clean & Certified Quality:** No fillers, no artificial additives — just pure, 3rd party tested Magtein, crafted in a cGMP-certified USA facility.
- • **Brain Boosting Bioavailability:** Patented Magtein form ensures superior magnesium absorption directly to your brain for enhanced memory and learning.

## Overview

Magnesium L-Threonate Complex with Apigenin and L-theanine features patented Magtein for superior brain magnesium absorption, supporting memory, learning, and synaptic plasticity. Enhanced with L-theanine and apigenin, it promotes calm focus, neuroprotection, and improved sleep quality. This clean, filler-free formula is 3rd party tested and made in a cGMP-certified USA facility, designed for professionals seeking cognitive edge and stress relief.

## Description

Buy Magnesium L-Threonate Complex with Apigenin and L-theanine, 90 Capsules, Patented Magtein Supplement on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: It works! - I got it for me and my son started using it. He loves it because helps with his anxieties and depression. Thank you.
Review: This is Good Stuff! - This Magnesium L-Threonate Complex is new to me. I really like it because it has completely lifted my brain fog! I faithfully take it everyday. The recommended dose is three small capsules. There are absolutely no fillers, no hidden or artificial ingredients, or artificial colors. This is the first time I have ordered the “Why Not Natural” brand, and am impressed with its quality.

## Features

- COGNITIVE FUNCTION: Magtein magnesium l-threonate is thought to cross the blood-brain barrier more efficiently compared with other forms of magnesium, allowing it to support the magnesium level of the brain, for memory, learning, and synaptic plasticity support. L-theanine supports alpha brain wave activity, for a relaxed but calm and focused mental state.
- NEUROPROTECTION: Magnesium l-threonate is considered potentially the most protective form for the brain, and apigenin supports brain health. All three ingredients work together to support long term brain function.
- SLEEP QUALITY: Magnesium l-threonate supports relaxation and calming of the nervous system, which may contribute to deeper sleep, while l-theanine promotes relaxation. Apigenin has been studied for its anxiolytic properties, including relaxation.
- STRESS SUPPORT: Both l-theanine and apigenin are compounds that support calming, and magnesium l-threonate supports overall relaxation and mood.
- SUPER CLEAN FORMULA: Compare to other magnesium l-threonate supplements - ours has no fillers, excipients or other additives. Our contains the patented Magtein form of magnesium l-threonate, is bottled in the USA in a cGMP-certified facility, and is 3rd party tested. Don’t settle for copycats when it comes to your health!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0CP1D265T |
| Best Sellers Rank | #23,835 in Health & Household ( See Top 100 in Health & Household ) #451 in Magnesium Mineral Supplements |
| Customer Reviews | 4.6 4.6 out of 5 stars (326) |
| Date First Available  | March 1, 2024 |
| Manufacturer  | Why Not Natural |
| Package Dimensions  | 5.39 x 1.93 x 1.89 inches; 2.47 ounces |

## Product Details

- **Brand:** Why Not Natural
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Primary Supplement Type:** Magnesium Complex
- **Unit Count:** 90 Count

## Images

![Magnesium L-Threonate Complex with Apigenin and L-theanine, 90 Capsules, Patented Magtein Supplement - Image 1](https://m.media-amazon.com/images/I/71zYMi6IHmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works!
*by C***. on November 2, 2025*

I got it for me and my son started using it. He loves it because helps with his anxieties and depression. Thank you.

### ⭐⭐⭐⭐⭐ This is Good Stuff!
*by A***R on November 20, 2025*

This Magnesium L-Threonate Complex is new to me. I really like it because it has completely lifted my brain fog! I faithfully take it everyday. The recommended dose is three small capsules. There are absolutely no fillers, no hidden or artificial ingredients, or artificial colors. This is the first time I have ordered the “Why Not Natural” brand, and am impressed with its quality.

### ⭐⭐⭐⭐⭐ Awesome Sleep Aid!!!
*by T***L on June 23, 2025*

This product is a real godsend for me and my wife! We are sleeping much better, more deeply, and falling asleep much more quickly, so we feel this product is directly responsible for greatly improving the quality of our sleep. No latent drowsiness whae we wake, no after affects. An excellent product fo more "mature" folks! Very highly recommended!!

## Frequently Bought Together

- Magnesium L-Threonate Complex with Apigenin and L-theanine, 90 Capsules, Patented Magtein Supplement
- Why Not Natural Magnesium Glycinate 500 mg Capsules Supplement - Vegan, 100% Pure, No Filler - Supports Sleep and Relaxation
- Why Not Natural Vitamin D3 K2 (MK-7) with Organic Spirulina, 10000 IU Extra Strength Supplement in Veggie Capsules, Supports Bone Health, Immune System and Mood

---

## 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.jp/products/622613095-magnesium-l-threonate-complex-with-apigenin-and-l-theanine-90](https://www.desertcart.jp/products/622613095-magnesium-l-threonate-complex-with-apigenin-and-l-theanine-90)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-18*