---
title: "Magtein — $146K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/magtein"
last_updated: "2026-08-12T16:23:38.696Z"
locale: en
meta:
description: "Amazon product research for magtein: $146K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for magtein: $146K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Magtein — $146K/mo Amazon US Product Research (2026)"
---
# **Magtein**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 91Growth 22Conversion 90Competition 27Returns 100Price range 95Avg price 95Brand share 40Review moat 24Quality gap 22
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$36.97**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$26.18–$54.49**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Great****$1.8M**
$1.8M/yr · 437K searches
**Conversion**
**Great****10.9%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****69%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****5,321.56**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-6.4%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
## **Is magtein profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, magtein is a $1.8M/yr Amazon United States market (437K searches/yr). The top 5 brands hold 81% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magtein market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **50K–60K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$1.8M–$2.2M**
- units × avg price
- **Conversion rate**
- **10.9%**
- **Avg BSR**
- **#298**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **88%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **157 days**
## **Competition: brands, sellers & click share**
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▲rising
**Sellers**
**56**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**69%**
Top 20: 100%
**Open market**
**15%**
- NOW Foods27% - Double Wood Supplements20% - Sports Research15% - Magtein13% - Life Extension7% - Teraputics4% - Open — no brand owns it (7 brands, 15%)
## **magtein demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -6.4% search growth over the last 90 days.
10K6KPrime Day '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/health-household/magtein/trend)
## **Top magtein search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **magtein**207K/yr-10.1%9.4% conv. - **magtein magnesium l-threonate**118K/yr-6.3%11.2% conv. - **magtein magnesium l-threonate 2000mg**22K/yr+36.9%12.6% conv. - **magnesium l-threonate magtein**10K/yr+29.3%4.1% conv. - **magtein now**11K/yr-27.6%18.7% conv. - **now magtein**10K/yr-1.3%14.9% conv. - **magtein magnesium l threonate**7K/yr+28.3%3.2% conv. - **now magnesium l-threonate**8K/yr-7.2%9.0% conv. - **magtein l-threonate**6K/yr-15.5%9.9% conv. - **now magtein magnesium l-threonate**5K/yr+4.7%15.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/magtein/search-terms)
## **Top magtein products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$88K10%$176K15%$264K20%$352K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 16 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Magnesium L Threonate Magtein - NSF Certified - Sleep and Cognitive Support High Absorption Most Bioavailable Form of Magnesium 2 000 mg 120 Capsules**Double Wood Supplements**$29.00**4.6★19,388 rev](https://www.amazon.com/dp/B01M4GM9R1) [2**NOW Foods Supplements Magtein with patented form of Magnesium (Mg) Cognitive Support* 90 Veg Capsules**NOW Foods**$29.34**4.6★7,361 rev](https://www.amazon.com/dp/B00JEZQAFG) [3**Magtein - Magnesium L-Threonate Supplement Memory Focus Sleep & Brain Health Formula for Men & Women Cognitive Support for Adults Clinically Researched - 60 Veg Capsules**Magtein**$31.91**4.6★2,087 rev](https://www.amazon.com/dp/B011M06YFG) [4**Sports Research Magnesium L-Threonate 2000mg w/Magtein 90 Count**Sports Research**$28.35**4.8★2,673 rev](https://www.amazon.com/dp/B0B336FCWC) [5**Now Foods Supplements Magtein Magnesium L-Threonate Cognitive Support* 180 Veg Capsules**NOW Foods**$53.69**4.6★7,361 rev](https://www.amazon.com/dp/B0CFS267GP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NOW Foods Supplements Magtein Magnesium L-Threonate Cognitive Support* 120 Veg Capsules**NOW Foods**$40.64**67 rev9mo ago](https://www.amazon.com/dp/B0FY4CG9W5) [**Sports Research Magnesium L-Threonate 2000mg w/Magtein 180 Count**Sports Research**$54.49**2,673 rev2y ago](https://www.amazon.com/dp/B0CDP398C6) [**Now Foods Supplements Magtein Magnesium L-Threonate Cognitive Support* 180 Veg Capsules**NOW Foods**$53.69**7,361 rev2y ago](https://www.amazon.com/dp/B0CFS267GP) [**Magceutics Magtein Magnesium L-Threonate to Improve Cognition Focus Memory Sleep Quality and Brain Health with Small Caps - 120 Vegetable Capsules**Magceutics**$31.98**310 rev4y ago](https://www.amazon.com/dp/B09RQ5T2D1) [**Momentous Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings**Momentous**$48.33**738 rev4y ago](https://www.amazon.com/dp/B09WWK4R2C)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NOW Foods Supplements Magtein Magnesium L-Threonate Cognitive Support* 120 Veg Capsules**NOW Foods**$40.64**4.8★**▲ 73%**](https://www.amazon.com/dp/B0FY4CG9W5) [**Kappa Nutrition Powered by Magbrain Magnesium L-Threonate Plant-Based 420mg Elemental Magnesium (3 Capsules) from 2 253mg 120 Vegan Capsules Brain Sleep & Muscle Support.**KAPPA NUTRITION**$26.18**4.7★**▲ 67%**](https://www.amazon.com/dp/B08MTNZH1L) [**Magceutics Magtein Magnesium L-Threonate to Improve Cognition Focus Memory Sleep Quality and Brain Health with Small Caps - 120 Vegetable Capsules**Magceutics**$31.98**4.6★**▲ 42%**](https://www.amazon.com/dp/B09RQ5T2D1) [**Sports Research Magnesium L-Threonate 2000mg w/Magtein 90 Count**Sports Research**$28.35**4.8★**▲ 29%**](https://www.amazon.com/dp/B0B336FCWC) [**Magnesium L Threonate Magtein Brain Supplement for Memory Focus Sleep and Cognitive Support High Absorption Magnesium L-Threonate Non-GMO No Laxative Effect 2 000 mg 120 Vegan Capsules**Teraputics**$28.99**4.6★**▲ 23%**](https://www.amazon.com/dp/B07BKPR76B)
**~~View all trending →~~**
## **What reviews say buyers love and hate about magtein**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**24%
*“Help with sleep”*
**Quality-Overall**17%
*“the quality is consistent”*
**Magnesium**12%
*“Great magnesium choice”*
**Value For Money**5%
*“Great value”*
**Vitamin**5%
*“They also have supported vitamin”*
**Efficiency**4%
*“Works well”*
**Advertised Vs Actual Product**4%
*“Accurate description”*
**Focus Enhancement**3%
*“I really consider it helps my focus”*
**Joint Pain**2%
*“And it does relieve the leg cramps”*
**Stress/Anxiety**1%
*“also helps with anxiety”*
### **What buyers complain about **
**Sleep Quality**12%
*“I have not slept well for years”*
**Value For Money**8%
*“It's expensive”*
**Side Effects**7%
*“Horrible side effect”*
**Magnesium**7%
*“all magnesium threonate is expensive”*
**Dosage**7%
*“Unclear dosage instructions”*
**Functionality-Overall**5%
*“No results”*
**Quality-Overall**5%
*“Poor Quality Control”*
**Certifications**3%
*“Not NSF Certified”*
**Acid Regulator/Stomach Ache Relief**3%
*“This product also makes me nauseous after taking it”*
**Size-Overall**2%
*“The capsules are very large”*
### **Top return reasons **
**Functionality-Overall**21%
**Magnesium**16%
**Sleep Quality**11%
**Value For Money**11%
**Fever Relief**5%
**Dosage**5%
**Advertised Vs Actual Product**5%
**Ingredients-Overall**5%
**Product Condition**5%
**Heart Health**5%
## **Common magtein questions**
- **Is magtein profitable to sell on Amazon United States?**
- The niche generates $1.8M/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -6.4%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the magtein niche?**
- 13 brands and 56 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in magtein?**
- Top complaints mined from reviews: Sleep Quality, Value For Money, Side Effects. The return rate is 0.0%.
- **When does demand for magtein peak?**
- Demand is steady year-round — the busiest month runs 1.8× the quietest.
- **What does it cost to enter the magtein niche?**
- Listings span $26.18–$54.49; the average listing price is $36.97 (sweet spot $15–$100). The average incumbent carries 5,322 reviews — the moat a new listing must climb.
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