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.

fsa magnesium

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.7%

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

Great7.3%

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

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Okay1,999

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-2.4%

90-day search growth — must beat 0% to launch

Competition

Bad87%

top-5 click share — a locked-up shelf

Brand share

Bad100%

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

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

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

87%

Top 20: 100%

Open market

EPSOM-IT90%
ASUTRA5%
PROcure3%
Magnum Solace2%

Demand & seasonality

Weekly Amazon search volume, last 96 weeks — -2.4% search growth over the last 90 days.

Peak months: Feb, Mar, Jun · busiest ÷ quietest = 5.0×

Open Trend

Top fsa magnesium search terms

epsom it97K/yr +40.4%10.7% conv.
epsom salt lotion221K/yr -11.2%7.6% conv.
epsom it soothing muscle lotion62K/yr +54.5%11.9% conv.
austra58K/yr -35.0%0.1% conv.
asutra melt pain away51K/yr -47.3%5.1% conv.
epsom it magnesium lotion7K/yr +797.2%6.9% conv.
epsom salt lotion with magnesium45K/yr -32.4%7.9% conv.
asutra28K/yr -25.8%2.8% conv.
epson salt lotion with magnesium47K/yr -40.5%7.6% conv.
epson salt lotion20K/yr +25.5%6.8% conv.

All 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.

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

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$19.074.4★4,127 rev

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$20.384.3★1,331 rev

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$12.694.5★1,339 rev

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$17.684.5★401 rev

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$14.834.4★915 rev

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$18.3632 rev

3mo ago

Magnum Solace Nighttime Magnesium Lotion with Arnica Highly Concentrated Magnesium for Muscles & Joints Apply to Legs or Feet Before Bed Skin-Friendly

Magnum Solace$9.667,702 rev

1y ago

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$17.68401 rev

2y ago

PROcure Epsom Salt Rub Gel - 2 Pack with Aloe Vera & Essential Oils

PROcure$14.521,441 rev

3y ago

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$14.83915 rev

3y ago

What buyers say about fsa magnesium

What buyers praise and complain about, mined from review topics.

What buyers love

Smell22%

“Light scent”

Efficiency15%

“works well”

Quality-Overall13%

“Decent enough product”

Soft Feel6%

“Goes on smoothly”

Value For Money4%

“Good price”

Advertised Vs Actual Product4%

“Does what it says”

Ease Of Use4%

“Goes on easy”

Absorbency3%

“absorbs good”

Moist/Dry3%

“moisturizes really well”

Ease Of Application2%

“Ease of application”

What buyers complain about

Functionality-Overall19%

“Did not work”

Allergies9%

“Skin Irritation”

Skin Health6%

“I dont like the way it feels on my skin”

Adhesion/Stickiness5%

“Has a weird sticky feeling”

Moist/Dry5%

“Would NOT dry”

Value For Money5%

“a little pricey for me”

Smell5%

“Dont like the scent”

Symptom Reduction4%

“did not notice any improvement”

Pain Relief-Overall3%

“Does not relieve pain”

Size-Overall2%

“Also, very small”

Top return reasons

Functionality-Overall31%

Advertised Vs Actual Product13%

Smell10%

Leak-Proof6%

Adhesion/Stickiness6%

Size-Overall4%