---
title: "Life Extension Magnesium — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/life-extension-magnesium"
last_updated: "2026-08-12T16:27:39.787Z"
locale: en
meta:
description: "Amazon product research for life extension magnesium: $313K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for life extension magnesium: $313K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Life Extension Magnesium — Amazon US Product Research"
---
# **Life Extension Magnesium**
**Worth a look**
Shows low returns (0.0%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 96Growth 29Conversion 92Competition 14Returns 100Price range 86Avg price 95Brand share 0Review moat 17Quality gap 24
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$3.8M**
$3.8M/yr · 1.2M searches
**Avg price**
**Incredible****$27.11**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****11.2%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$8.38–$68.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+3.5%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****19,100.5**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****84%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
## **Is life extension magnesium profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, life extension magnesium is a $3.8M/yr Amazon United States market (1.2M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jul–Oct. Verdict: Worth a look — 52/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **life extension magnesium market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **150K–200K**
- avg 10,000–12,500/product
- **Revenue / yr**
- **$4.1M–$5.4M**
- units × avg price
- **Conversion rate**
- **11.2%**
- **Avg BSR**
- **#124**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **66 months**
- **Avg seller age**
- **146 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**28**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**84%**
Top 20: 100%
**Open market**
**0%**
- Doctor's BEST57% - Life Extension37% - Pure Encapsulations2% - Jarrow Formulas2% - Designs for Health2% - Open — no brand owns it (0%)
## **life extension magnesium demand & seasonality**
Weekly Amazon search volume, last 100 weeks — +3.5% search growth over the last 90 days.
25K15KSpike '24Spike '25Prime Day '25Prime Day '26 seasonDecMarJunAugNovMarMay
Peak months: May, Jul, Oct · busiest ÷ quietest = 3.0×
[**Open Trend **](https://flapen.com/research/us/health-household/life-extension-magnesium/trend)
## **Top life extension magnesium search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **life extension**400K/yr-6.5%1.7% conv. - **doctors best magnesium glycinate**197K/yr+9.0%15.3% conv. - **doctors best high absorption magnesium**66K/yr+63.9%11.5% conv. - **life extension magnesium**105K/yr-40.1%7.2% conv. - **life extension neuro-mag magnesium l-threonate**51K/yr+10.9%16.6% conv. - **doctors best high absorption magnesium glycinate**31K/yr+58.9%14.8% conv. - **doctors best**53K/yr+5.7%1.3% conv. - **neuro mag life extension**31K/yr+17.6%18.2% conv. - **neuro mag**59K/yr-1.9%13.3% conv. - **magnesium glycinate doctors best**33K/yr+24.5%10.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/life-extension-magnesium/search-terms)
## **Top life extension magnesium 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%10%$376K20%$752K30%$1.1M40%$1.5M101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Tablets for Women & Men 200mg per Serving Supports Calm & Relaxation Vegan - 240 Count**Doctor's BEST**$19.18**4.6★76,110 rev](https://www.amazon.com/dp/B000BD0RT0) [2**Life Extension Neuro-Mag Magnesium L-Threonate Memory Health Quick Thinking Cognitive Health Support Vegetarian Non-GMO 90 Vegetarian Capsules (144 mg from 2000 mg Magtein magnesium L-threonate**Life Extension**$29.01**4.6★24,338 rev](https://www.amazon.com/dp/B006P536E6) [3**Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Tablets for Women & Men 200mg per Serving Supports Calm & Relaxation Vegan - 120 Count**Doctor's BEST**$12.05**4.6★76,110 rev](https://www.amazon.com/dp/B00151G8L8) [4**Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Capsules for Women & Men 105 mg per Serving Calm Support Vegan - 120 Veg Caps**Doctor's BEST**$14.03**4.7★3,711 rev](https://www.amazon.com/dp/B08K46JZJG) [5**Life Extension Magnesium Glycinate Heart Health Bone Health Nerve and Muscle Support Highly absorbable Gluten-Free Non-GMO Vegetarian 90 Capsules**Life Extension**$16.64**4.7★2,110 rev](https://www.amazon.com/dp/B0DMTV24LR)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Life Extension Magnesium Glycinate Heart Health Bone Health Nerve and Muscle Support Highly absorbable Gluten-Free Non-GMO Vegetarian 90 Capsules**Life Extension**$16.64**2,110 rev1y ago](https://www.amazon.com/dp/B0DMTV24LR) [**Doctors Best Magnesium Glycinate Powder for Calm & Sleep Support - Magnesium Supplement for Men & Women 400 mg Per Serving 100% Chelated High Absorption Fruit Punch Flavor Gluten Free - 12.1 oz**Doctor's BEST**$28.86**88 rev1y ago](https://www.amazon.com/dp/B0DCGJ8HN4) [**Life Extension NAD+ Cell Regenerator and Resveratrol Elite* nicotinamide riboside Trans-resveratrol quercetin Fisetin Heart Health Healthy Aging Vegetarian Non-GMO Gluten Free 30 Capsules**Life Extension**$41.59**3,268 rev4y ago](https://www.amazon.com/dp/B08PMJFLP8) [**Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Capsules for Women & Men 105 mg per Serving Calm Support Vegan - 120 Veg Caps**Doctor's BEST**$14.03**3,711 rev5y ago](https://www.amazon.com/dp/B08K46JZJG) [**Life Extension Neuro-Mag Magnesium L-Threonate 150 Vegetarian Capsules**Life Extension**$50.63**2,062 rev7y ago](https://www.amazon.com/dp/B07KWM4C5L)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Tablets for Women & Men 200mg per Serving Supports Calm & Relaxation Vegan - 120 Count**Doctor's BEST**$12.05**4.6★**▲ 119%**](https://www.amazon.com/dp/B00151G8L8) [**Doctors Best Magnesium Glycinate Powder for Calm & Sleep Support - Magnesium Supplement for Men & Women 400 mg Per Serving 100% Chelated High Absorption Fruit Punch Flavor Gluten Free - 12.1 oz**Doctor's BEST**$28.86**4.5★**▲ 75%**](https://www.amazon.com/dp/B0DCGJ8HN4) [**Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief Sleep Heart Health Nerves Muscles and Metabolism* - with Magnesium Glycinate - 90 Capsules**Pure Encapsulations**$26.10**4.7★**▲ 36%**](https://www.amazon.com/dp/B07P5K7DQP) [**Life Extension NAD+ Cell Regenerator and Resveratrol Elite* nicotinamide riboside Trans-resveratrol quercetin Fisetin Heart Health Healthy Aging Vegetarian Non-GMO Gluten Free 30 Capsules**Life Extension**$41.59**4.6★**— 2%**](https://www.amazon.com/dp/B08PMJFLP8) [**Life Extension One-Per-Day Multivitamin Packed with Over 25 Vitamins Minerals & Plant Extracts Quercetin 5-MTHF Folate & More 1-Daily Non-GMO Gluten-Free 60 Tablets**Life Extension**$16.03**4.5★**— 5%**](https://www.amazon.com/dp/B07JVM5VPR)
**~~View all trending →~~**
## **What reviews say buyers love and hate about life extension magnesium**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**21%
*“Good night's sleep”*
**Quality-Overall**18%
*“Great product from a trusted brand”*
**Magnesium**12%
*“These magnesium pills are amazing”*
**Vitamin**6%
*“They seem to have the best combination of vitamins”*
**Value For Money**3%
*“Great Value”*
**Advertised Vs Actual Product**2%
*“As advertised”*
**Stress/Anxiety**2%
*“less stress”*
**Efficiency**2%
*“The first bottle worked well”*
**Muscle Pain Relief**2%
*“relaxing the muscles”*
**Ease Of Chewing/Swallowing**2%
*“They are small enough to swallow as opposed to the tablets”*
### **What buyers complain about **
**Ease Of Chewing/Swallowing**12%
*“Unable to swallow”*
**Size-Overall**11%
*“Small”*
**Sleep Quality**9%
*“Cant sleep”*
**Side Effects**5%
*“Made me dizzy”*
**Functionality-Overall**4%
*“Doesnt work as described”*
**Magnesium**4%
*“Maybe not pure magnesium glycinate or no quality control”*
**Dosage**4%
*“A little low on mg”*
**Quality-Overall**4%
*“Poor Quality Control”*
**Acid Regulator/Stomach Ache Relief**4%
*“stomach hurts”*
**Value For Money**3%
*“Waste of money”*
### **Top return reasons **
**Magnesium**18%
**Functionality-Overall**17%
**Size-Overall**11%
**Dosage**10%
**Sleep Quality**7%
**Acid Regulator/Stomach Ache Relief**5%
**Side Effects**3%
**Ease Of Chewing/Swallowing**3%
**Value For Money**3%
**Advertised Vs Actual Product**3%
## **Common life extension magnesium questions**
- **Is life extension magnesium profitable to sell on Amazon United States?**
- The niche generates $3.8M/yr across 14 tracked products. 90-day search growth is +3.5%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the life extension magnesium niche?**
- 5 brands and 28 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in life extension magnesium?**
- Top complaints mined from reviews: Ease Of Chewing/Swallowing, Size-Overall, Sleep Quality. The return rate is 0.0%.
- **When does demand for life extension magnesium peak?**
- Demand peaks in May–Jul–Oct; the busiest month runs 3.0× the quietest.
- **What does it cost to enter the life extension magnesium niche?**
- Listings span $8.38–$68.91; the average listing price is $27.11 (sweet spot $15–$100). The average incumbent carries 19,101 reviews — the moat a new listing must climb.
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