---
title: "Magnesium Oxide 200mg — $22K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/magnesium-oxide-200mg"
last_updated: "2026-08-12T16:27:21.989Z"
locale: en
meta:
description: "Amazon product research for magnesium oxide 200mg: $22K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for magnesium oxide 200mg: $22K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Magnesium Oxide 200mg — $22K/mo Amazon US Product Research"
---
# **Magnesium Oxide 200mg**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 49Growth 40Conversion 99Competition 0Returns 100Price range 0Avg price 21Brand share 0Review moat 14Quality gap 20
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****19.1%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****$266K**
$266K/yr · 188K searches
**Growth**
**Okay****+11.7%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****$7.40**
avg listing price — sweet spot $15–$100
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****24,541.5**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Price range**
**Bad****$4.10–$12.11**
cheapest to priciest tracked listing — scored on the share inside $15–$100
## **Is magnesium oxide 200mg profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, magnesium oxide 200mg is a $266K/yr Amazon United States market (188K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 37/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magnesium oxide 200mg market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **40K–50K**
- avg 10,000–12,500/product
- **Revenue / yr**
- **$296K–$370K**
- units × avg price
- **Conversion rate**
- **19.1%**
- **Avg BSR**
- **#980**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **50%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **79 months**
- **Avg seller age**
- **151 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**2 **▼falling
**Sellers**
**70**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- Nature Made96% - Swanson4%
## **magnesium oxide 200mg demand & seasonality**
Weekly Amazon search volume, last 65 weeks — +11.7% search growth over the last 90 days.
4K3KPrime Day '25Spike '25Spike '26 seasonMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/health-household/magnesium-oxide-200mg/trend)
## **Top magnesium oxide 200mg search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **magnesium 250 mg**59K/yr+9.7%22.5% conv. - **magnesium oxide 250 mg**40K/yr+11.8%12.1% conv. - **magnesium 250**18K/yr+25.4%18.5% conv. - **magnesium oxide 200mg**20K/yr+19.4%5.2% conv. - **magnesium 250mg**13K/yr+23.2%11.2% conv. - **nature made magnesium 250 mg**11K/yr-13.7%24.4% conv. - **magnesium 250 mg tablets**11K/yr+24.3%9.2% conv. - **magnesium 250 mg softgels**5K/yr-15.1%18.5% conv. - **magnesium oxide 200 mg**4K/yr+32.2%7.2% conv. - **250 mg magnesium**4K/yr-15.7%19.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/magnesium-oxide-200mg/search-terms)
## **Top magnesium oxide 200mg 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%20%$53K40%$106K60%$160K80%$213K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 4 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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) [2**Nature Made Magnesium 250mg 100 Tablets**Nature Made**$4.10**4.7★27,696 rev](https://www.amazon.com/dp/B01CJGXMU2) [3**Nature Made Magnesium 250 mg Softgels 90 Softgels**Nature Made**$6.57**4.7★34,776 rev](https://www.amazon.com/dp/B008PQD65M) [4**Swanson Magnesium 200 Milligrams 250 Capsules**Swanson**$12.11**4.6★918 rev](https://www.amazon.com/dp/B002BCMX5K)
### **Newest**
by launch date
[**Nature Made Magnesium 250 mg Softgels 90 Softgels**Nature Made**$6.57**34,776 rev14y ago](https://www.amazon.com/dp/B008PQD65M) [**Swanson Magnesium 200 Milligrams 250 Capsules**Swanson**$12.11**918 rev21y ago](https://www.amazon.com/dp/B002BCMX5K) [**Nature Made Magnesium Oxide 250 mg for Muscle Relaxation 200 Tablets**Nature Made**$6.80**34,776 rev27y ago](https://www.amazon.com/dp/B0002VG3QC) [**Nature Made Magnesium 250mg 100 Tablets**Nature Made**$4.10**27,696 rev27y ago](https://www.amazon.com/dp/B01CJGXMU2)
### **Trending**
90-day click momentum
[**Nature Made Magnesium 250 mg Softgels 90 Softgels**Nature Made**$6.57**4.7★**▲ 15%**](https://www.amazon.com/dp/B008PQD65M) [**Nature Made Magnesium Oxide 250 mg for Muscle Relaxation 200 Tablets**Nature Made**$6.80**4.7★**— 1%**](https://www.amazon.com/dp/B0002VG3QC) [**Nature Made Magnesium 250mg 100 Tablets**Nature Made**$4.10**4.7★**— 5%**](https://www.amazon.com/dp/B01CJGXMU2) [**Swanson Magnesium 200 Milligrams 250 Capsules**Swanson**$12.11**4.6★**▼ 30%**](https://www.amazon.com/dp/B002BCMX5K)
## **What reviews say buyers love and hate about magnesium oxide 200mg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Magnesium**17%
*“best magnesium”*
**Quality-Overall**15%
*“good quality pills”*
**Value For Money**13%
*“Good deal”*
**Vitamin**10%
*“Vitamin is a good thing”*
**Sleep Quality**9%
*“helps me with sleep”*
**Advertised Vs Actual Product**5%
*“Delivers exactly as described”*
**Efficiency**4%
*“Works well”*
**Ease Of Use**3%
*“No problems using this”*
**Ease Of Chewing/Swallowing**3%
*“Easy to swallow”*
**Muscle Pain Relief**3%
*“This brand is good for muscle pain”*
### **What buyers complain about **
**Magnesium**33%
*“Magnesium Oxide not Glycinate”*
**Dosage**10%
*“500 mg too high”*
**Side Effects**8%
*“This gave me intense nightmares for about a week I stopped taking it”*
**Acid Regulator/Stomach Ache Relief**5%
*“I'm assuming from the stomach upset”*
**Artificial Sweeteners**5%
*“Contains artificial preservatives”*
**Ease Of Chewing/Swallowing**3%
*“Hard to swallow”*
**Functionality-Overall**3%
*“Doesnt work”*
**Regulates Digestion**3%
*“This form can cause - uh - gastrointestinal”*
**Value For Money**3%
*“Waste of money”*
**Advertised Vs Actual Product**2%
*“I wasnt expecting something this misleading from Nature”*
### **Top return reasons **
**Magnesium**82%
**Calcium**9%
**Dosage**9%
## **Common magnesium oxide 200mg questions**
- **Is magnesium oxide 200mg profitable to sell on Amazon United States?**
- The niche generates $266K/yr across 4 tracked products. 90-day search growth is +11.7%. Flapen's verdict: Skip it (37/100).
- **How competitive is the magnesium oxide 200mg niche?**
- 2 brands and 70 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in magnesium oxide 200mg?**
- Top complaints mined from reviews: Magnesium, Dosage, Side Effects. The return rate is 0.0%.
- **When does demand for magnesium oxide 200mg peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the magnesium oxide 200mg niche?**
- Listings span $4.10–$12.11; the average listing price is $7.40 (sweet spot $15–$100). The average incumbent carries 24,542 reviews — the moat a new listing must climb.
## **Related niches to research next**
Same-category niches scoring near this one — the next ones worth researching.
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)