---
title: "Fsa Magnesium — $959K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/fsa-magnesium"
last_updated: "2026-08-11T05:29:02.558Z"
locale: en
meta:
description: "Niche score 49/100 · $959K/yr market · 751K searches/yr · $17.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $959K/yr market · 751K searches/yr · $17.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Fsa Magnesium — $959K/yr Amazon US Niche (2026) - Flapen"
---
# **fsa magnesium**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 77Growth 24Conversion 76Competition 11Returns 97Price range 73Avg price 81Brand share 0Review moat 45Quality gap 53
**Returns**
**Incredible****0.7%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$17.42**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$959K**
$959K/yr · 751K searches
**Conversion**
**Great****7.3%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$9.66–$29.59**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****1,999**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-2.4%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****87%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, fsa magnesium is a $959K/yr Amazon United States market (751K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb–Mar–Jun. Verdict: Skip it — 49/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fsa magnesium market data**
- **Units sold / yr**
- **60K–80K**
- avg 6,000–8,000/product
- **Revenue / yr**
- **$1.0M–$1.4M**
- units × avg price
- **Conversion rate**
- **7.3%**
- **Avg BSR**
- **#171**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **59 months**
- **Avg seller age**
- **141 days**
## **Competition & brand share**
The top 5 products capture 87% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **—flat
**Sellers**
**12**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**87%**
Top 20: 100%
**Open market**
**0%**
- EPSOM-IT90% - ASUTRA5% - PROcure3% - Magnum Solace2%
## **Demand & seasonality**
Weekly Amazon search volume, last 96 weeks — -2.4% search growth over the last 90 days.
18K13KSpike '24Holiday '24Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Feb, Mar, Jun · busiest ÷ quietest = 5.0×
[**Open Trend **](https://flapen.com/research/us/health-household/fsa-magnesium/trend)
## **Top fsa magnesium search terms**
- **epsom it**97K/yr+40.4%10.7% conv. - **epsom salt lotion**221K/yr-11.2%7.6% conv. - **epsom it soothing muscle lotion**62K/yr+54.5%11.9% conv. - **austra**58K/yr-35.0%0.1% conv. - **asutra melt pain away**51K/yr-47.3%5.1% conv. - **epsom it magnesium lotion**7K/yr+797.2%6.9% conv. - **epsom salt lotion with magnesium**45K/yr-32.4%7.9% conv. - **asutra**28K/yr-25.8%2.8% conv. - **epson salt lotion with magnesium**47K/yr-40.5%7.6% conv. - **epson salt lotion**20K/yr+25.5%6.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/fsa-magnesium/search-terms)
## **Top fsa magnesium products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$144K30%$288K45%$432K60%$575K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Epsom-It Soothing Muscle Magnesium Lotion Epsom Salt Topical Cream with Arnica and Magnesium Sulfate - Designed for Muscle Stiffness Leg Cramps Feet Knees and Achy Feet - 8.0 oz**EPSOM-IT**$19.07**4.4★4,127 rev](https://www.amazon.com/dp/B073DS33KY) [2**Epsom-It Soothing Nerve Lotion - Epsom Salt Magnesium Lotion Topical Magnesium Cream with Capsaicin & Arnica to Provide Comfort for Legs Knee and Feet 8.0 oz.**EPSOM-IT**$20.38**4.3★1,331 rev](https://www.amazon.com/dp/B0C1PDMC6Y) [3**Epsom-It Soothing Muscle Lotion - Roll On Epsom Salt Lotion with Arnica for Muscle Stiffness Leg Knees and Feet Discomfort Topical Magnesium Cream 3oz**EPSOM-IT**$12.69**4.5★1,339 rev](https://www.amazon.com/dp/B0924VKH4Y) [4**EPSOM-IT Calming Foot Lotion - Topical Magnesium Cream for Tired Feet & Ankles Epsom Salt Magnesium Sulfate Rub with Urea Soften Tough Skin & Cracked Heels Stiffness in Legs Knees and Feet 3.5oz**EPSOM-IT**$17.68**4.5★401 rev](https://www.amazon.com/dp/B0CZSG2XCZ) [5**Epsom-It Soothing Nerve Lotion - Roll On Epsom Salt Magnesium Lotion Topical Magnesium Cream with Capsaicin & Arnica for Tired Muscles and Sleep 3oz**EPSOM-IT**$14.83**4.4★915 rev](https://www.amazon.com/dp/B0C31MVP4K)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**EPSOM-IT Soothing Magnesium Lotion 6oz Bottle Concentrated Epsom Salt Lotion with Shea Butter for Better Sleep Relaxation & Muscle Stiffness | Soothing Magnesium for Daily Self-Care | Made in USA**EPSOM-IT**$18.36**32 rev3mo ago](https://www.amazon.com/dp/B0GWPNGW37) [**Magnum Solace Nighttime Magnesium Lotion with Arnica Highly Concentrated Magnesium for Muscles & Joints Apply to Legs or Feet Before Bed Skin-Friendly**Magnum Solace**$9.66**7,702 rev1y ago](https://www.amazon.com/dp/B0F1QHNFJP) [**EPSOM-IT Calming Foot Lotion - Topical Magnesium Cream for Tired Feet & Ankles Epsom Salt Magnesium Sulfate Rub with Urea Soften Tough Skin & Cracked Heels Stiffness in Legs Knees and Feet 3.5oz**EPSOM-IT**$17.68**401 rev2y ago](https://www.amazon.com/dp/B0CZSG2XCZ) [**PROcure Epsom Salt Rub Gel - 2 Pack with Aloe Vera & Essential Oils**PROcure**$14.52**1,441 rev3y ago](https://www.amazon.com/dp/B0C78FS41S) [**Epsom-It Soothing Nerve Lotion - Roll On Epsom Salt Magnesium Lotion Topical Magnesium Cream with Capsaicin & Arnica for Tired Muscles and Sleep 3oz**EPSOM-IT**$14.83**915 rev3y ago](https://www.amazon.com/dp/B0C31MVP4K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**EPSOM-IT Soothing Magnesium Lotion 6oz Bottle Concentrated Epsom Salt Lotion with Shea Butter for Better Sleep Relaxation & Muscle Stiffness | Soothing Magnesium for Daily Self-Care | Made in USA**EPSOM-IT**$18.36**4.8★**▲ 367%**](https://www.amazon.com/dp/B0GWPNGW37) [**Epsom-It Soothing Muscle Magnesium Lotion Epsom Salt Topical Cream with Arnica and Magnesium Sulfate - Designed for Muscle Stiffness Leg Cramps Feet Knees and Achy Feet - 8.0 oz**EPSOM-IT**$19.07**4.4★**— 7%**](https://www.amazon.com/dp/B073DS33KY) [**EPSOM-IT Calming Foot Lotion - Topical Magnesium Cream for Tired Feet & Ankles Epsom Salt Magnesium Sulfate Rub with Urea Soften Tough Skin & Cracked Heels Stiffness in Legs Knees and Feet 3.5oz**EPSOM-IT**$17.68**4.5★**— 5%**](https://www.amazon.com/dp/B0CZSG2XCZ) [**Epsom-It Soothing Muscle Lotion - Roll On Epsom Salt Lotion with Arnica for Muscle Stiffness Leg Knees and Feet Discomfort Topical Magnesium Cream 3oz**EPSOM-IT**$12.69**4.5★**— 0%**](https://www.amazon.com/dp/B0924VKH4Y) [**Epsom-It Soothing Nerve Lotion - Roll On Epsom Salt Magnesium Lotion Topical Magnesium Cream with Capsaicin & Arnica for Tired Muscles and Sleep 3oz**EPSOM-IT**$14.83**4.4★**— 3%**](https://www.amazon.com/dp/B0C31MVP4K)
**~~View all trending →~~**
## **What buyers say about fsa magnesium**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Smell**22%
*“Light scent”*
**Efficiency**15%
*“works well”*
**Quality-Overall**13%
*“Decent enough product”*
**Soft Feel**6%
*“Goes on smoothly”*
**Value For Money**4%
*“Good price”*
**Advertised Vs Actual Product**4%
*“Does what it says”*
**Ease Of Use**4%
*“Goes on easy”*
**Absorbency**3%
*“absorbs good”*
**Moist/Dry**3%
*“moisturizes really well”*
**Ease Of Application**2%
*“Ease of application”*
### **What buyers complain about **
**Functionality-Overall**19%
*“Did not work”*
**Allergies**9%
*“Skin Irritation”*
**Skin Health**6%
*“I dont like the way it feels on my skin”*
**Adhesion/Stickiness**5%
*“Has a weird sticky feeling”*
**Moist/Dry**5%
*“Would NOT dry”*
**Value For Money**5%
*“a little pricey for me”*
**Smell**5%
*“Dont like the scent”*
**Symptom Reduction**4%
*“did not notice any improvement”*
**Pain Relief-Overall**3%
*“Does not relieve pain”*
**Size-Overall**2%
*“Also, very small”*
### **Top return reasons **
**Functionality-Overall**31%
**Advertised Vs Actual Product**13%
**Smell**10%
**Leak-Proof**6%
**Adhesion/Stickiness**6%
**Size-Overall**4%
**Moist/Dry**3%
**Skin Health**3%
**Value For Money**3%
**Ingredients-Overall**2%
## **Common questions**
- **Is fsa magnesium profitable to sell on Amazon United States?**
- The niche generates $959K/yr across 9 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.4%. Flapen's verdict: Skip it (49/100).
- **How competitive is the fsa magnesium niche?**
- 4 brands and 12 sellers compete. The top 5 products take 87% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in fsa magnesium?**
- Top complaints mined from reviews: Functionality-Overall, Allergies, Skin Health. The return rate is 0.7%.
- **When does demand for fsa magnesium peak?**
- Demand peaks in Feb–Mar–Jun; the busiest month runs 5.0× the quietest.
- **What does it cost to enter the fsa magnesium niche?**
- Listings span $9.66–$29.59; the average listing price is $17.42 (sweet spot $15–$100). The average incumbent carries 1,999 reviews — the moat a new listing must climb.
## **Related niches in Health & Household**
- 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)