---
title: "Magnesium — $186K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/magnesium"
last_updated: "2026-08-12T15:04:22.901Z"
locale: en
meta:
description: "Amazon product research for magnesium: $186K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for magnesium: $186K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Magnesium — $186K/mo Amazon US Product Research (2026)"
---
# **Magnesium**
**Worth a look**
Shows low returns (0.0%), but a deep review moat (23,930 avg reviews) keeps it on the watch list.
Market size 95Growth 22Conversion 35Competition 38Returns 100Price range 73Avg price 82Brand share 43Review moat 14Quality gap 21
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$2.2M**
$2.2M/yr · 4.4M searches
**Avg price**
**Great****$17.86**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$4.10–$45.01**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Okay****2.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-5.9%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****23,929.83**
avg incumbent reviews — the moat a new listing must climb
## **Is magnesium profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, magnesium is a $2.2M/yr Amazon United States market (4.4M searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Aug–Sep. Verdict: Worth a look — 52/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magnesium market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **200K–250K**
- avg 12,500–15,000/product
- **Revenue / yr**
- **$3.6M–$4.5M**
- units × avg price
- **Conversion rate**
- **2.8%**
- **Avg BSR**
- **#60**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **92%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **58 months**
- **Avg seller age**
- **146 days**
## **Competition: brands, sellers & click share**
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▲rising
**Sellers**
**110**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**62%**
Top 20: 94%
**Open market**
**17%**
- Nature's Bounty32% - Nature Made27% - Pure Encapsulations11% - Nobi Nutrition5% - BIOptimizers4% - Nutricost3% - Open — no brand owns it (8 brands, 17%)
## **magnesium demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -5.9% search growth over the last 90 days.
300K200KSpike '25 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep · busiest ÷ quietest = 2.6×
[**Open Trend **](https://flapen.com/research/us/health-household/magnesium/trend)
## **Top magnesium search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **mag**1.8M/yr+2.6%0.1% conv. - **magnesium supplement**844K/yr-51.0%7.2% conv. - **magn**372K/yr+8.8%0.3% conv. - **magnesium for women**115K/yr-8.2%4.8% conv. - **magnesium sleep**143K/yr-11.5%3.5% conv. - **magnesium supplement for women**84K/yr-10.7%5.4% conv. - **magnesium pills**72K/yr+9.6%7.4% conv. - **magnecio**56K/yr+7.5%1.8% conv. - **magnesium for constipation**63K/yr+2.1%2.4% conv. - **magnesium 250 mg**59K/yr+9.7%22.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/magnesium/search-terms)
## **Top 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%$224K20%$447K30%$671K40%$895K1001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Natures Bounty Magnesium 500 mg Tablets High Potency Magnesium Supplement for Bone & Muscle Health Whole Body Support 200 Count (Pack of 1)**Nature's Bounty**$8.74**4.7★105,290 rev](https://www.amazon.com/dp/B00H5PJ0HW) [2**Nature Made Magnesium Oxide 250 mg for Muscle Relaxation 200 Tablets**Nature Made**$6.80**4.7★34,776 rev](https://www.amazon.com/dp/B0002VG3QC) [3**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★49,969 rev](https://www.amazon.com/dp/B07P5K7DQP) [4**Nature Made Magnesium 250mg 100 Tablets**Nature Made**$4.10**4.7★27,696 rev](https://www.amazon.com/dp/B01CJGXMU2) [5**BIOptimizers Magnesium Breakthrough Supplement with 500mg - 7 Forms of Magnesium: Glycinate Malate Citrate and More - Natural Support for Sleep and Cognitive Function -30 Capsules- Calming Vitamins**BIOptimizers**$20.61**4.6★18,865 rev](https://www.amazon.com/dp/B09R2DCRMY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Magnesium Complex for Women & Men 500mg (7-in-1) Magnesium Glycinate with Vegan D3 B6 and Manganese (Made In USA) + Gluconate Citrate Malate Taurate Orotate Carbonate (Oxide-Free) Small Capsule**Etta Vita**$26.28**402 rev4mo ago](https://www.amazon.com/dp/B0G4F3GP5S) [**Natures Bounty Magnesium Supplements 500mg Tablets Support Bone & Muscle Health 200 Count (Pack of 2)**Nature's Bounty**$16.23**105,290 rev8mo ago](https://www.amazon.com/dp/B08C65K2WC) [**Magnesium Complex for Women | Glycinate Citrate & More 20-in-1 Formula with D3 K2 (MK-7) B6 (as P5P) & Ashwagandha | 240 Vegetarian Capsules Filler Free Non-GMO**Micro Ingredients**$23.46**247 rev9mo ago](https://www.amazon.com/dp/B0FWJ7TP6X) [**Magnesium Complex 700mg | 12-in-1 High Absorption Supplement | Glycinate Citrate Malate Taurate & More | Sleep Support Muscle Cramp Relief Stress Heart Bone & Nerve Health | 120 Vegan Capsules**Vccvaa**$10.13**2,810 rev1y ago](https://www.amazon.com/dp/B0FHH4CCD9) [**THORNE - Magnesium Glycinate - Supports Restful Sleep Muscle Relaxation Heart Health & Metabolism* - Chelated Magnesium Capsules - Third-Party Certified - Gluten Dairy & Soy-Free - 90 Servings**THORNE**$25.39**2,847 rev1y ago](https://www.amazon.com/dp/B0F5XYHRPV)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Magnesium Complex for Women | Glycinate Citrate & More 20-in-1 Formula with D3 K2 (MK-7) B6 (as P5P) & Ashwagandha | 240 Vegetarian Capsules Filler Free Non-GMO**Micro Ingredients**$23.46**4.6★**▲ 376%**](https://www.amazon.com/dp/B0FWJ7TP6X) [**Magnesium Complex for Women & Men 500mg (7-in-1) Magnesium Glycinate with Vegan D3 B6 and Manganese (Made In USA) + Gluconate Citrate Malate Taurate Orotate Carbonate (Oxide-Free) Small Capsule**Etta Vita**$26.28**4.6★**▲ 268%**](https://www.amazon.com/dp/B0G4F3GP5S) [**Magnesium Complex Supplement 8 Elemental 1000mg - Magnesium Glycinate Citrate Malate Taurate Chelated for Easy Absorption for Bones Muscle Recovery Energy Vegan Non-GMO 90 Capsules**Toplux**$28.46**4.6★**▲ 167%**](https://www.amazon.com/dp/B0CRY2SVPV) [**Magnesium Glycinate 500mg | High Absorption | Sleep Muscle Bone Heart Health & Relaxation Support for Women & Men | Chelated Mag Glycinate | Magnesium Supplement | Vegan & Non-GMO | 120 Capsules**Nobi Nutrition**$15.15**4.6★**▲ 140%**](https://www.amazon.com/dp/B0CWM5K6W6) [**Spectrum 5 Magnesium | 5-in-1 Complex + 72 Trace Minerals for Enhanced Absorption | Irish Sea Sourced | 500mg per Serving | Made in USA Third Party Tested GMP Certified**SonoHealth**$24.43**4.6★**▲ 117%**](https://www.amazon.com/dp/B0D92XKTCY)
**~~View all trending →~~**
## **What reviews say buyers love and hate about magnesium**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**19%
*“Great for sleeping”*
**Quality-Overall**17%
*“Quality is pure”*
**Magnesium**16%
*“Best Magnesium supplement”*
**Value For Money**5%
*“Great buy”*
**Vitamin**5%
*“Best vitamins”*
**Advertised Vs Actual Product**4%
*“Exactly as advertised”*
**Muscle Pain Relief**4%
*“Eases muscle cramping”*
**Efficiency**4%
*“Works ok”*
**Ease Of Chewing/Swallowing**2%
*“Not hard to swallow”*
**Stress/Anxiety**2%
*“Relaxing”*
### **What buyers complain about **
**Magnesium**11%
*“Low magnesium”*
**Sleep Quality**10%
*“Does not help you sleep”*
**Dosage**8%
*“1000mg is too high of dose”*
**Acid Regulator/Stomach Ache Relief**5%
*“Horrible stomach pains”*
**Size-Overall**5%
*“Too Big”*
**Functionality-Overall**5%
*“noticed no results”*
**Side Effects**5%
*“Bad Side effects”*
**Value For Money**4%
*“Way overpriced”*
**Quality-Overall**4%
*“Poor Quality Control”*
**Ease Of Chewing/Swallowing**2%
*“powder taste bad if you try to chew it or anything”*
### **Top return reasons **
**Magnesium**32%
**Dosage**11%
**Functionality-Overall**7%
**Value For Money**7%
**Acid Regulator/Stomach Ache Relief**6%
**Advertised Vs Actual Product**4%
**Ingredients-Overall**4%
**Sleep Quality**4%
**Ease Of Chewing/Swallowing**3%
**Size-Overall**3%
## **Common magnesium questions**
- **Is magnesium profitable to sell on Amazon United States?**
- The niche generates $2.2M/yr across 24 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.9%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the magnesium niche?**
- 14 brands and 110 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in magnesium?**
- Top complaints mined from reviews: Magnesium, Sleep Quality, Dosage. The return rate is 0.0%.
- **When does demand for magnesium peak?**
- Demand peaks in Aug–Sep; the busiest month runs 2.6× the quietest.
- **What does it cost to enter the magnesium niche?**
- Listings span $4.10–$45.01; the average listing price is $17.86 (sweet spot $15–$100). The average incumbent carries 23,930 reviews — the moat a new listing must climb.
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