Is magox 400 profitable to sell on Amazon United States?

The niche generates $62K/yr across 6 tracked products. 90-day search growth is +15.0%. Flapen's verdict: Skip it (39/100).

How competitive is the magox 400 niche?

2 brands and 25 sellers compete. The top 5 products take 98% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in magox 400?

Top complaints mined from reviews: Magnesium, Sleep Quality, Functionality-Overall. The return rate is 0.0%.

When does demand for magox 400 peak?

Demand peaks in May; the busiest month runs 1.8× the quietest.

What does it cost to enter the magox 400 niche?

Listings span $8.38–$26.69; the average listing price is $15.60 (sweet spot $15–$100). The average incumbent carries 8,014 reviews — the moat a new listing must climb.

Magox 400

Skip it

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

Conversion

Incredible24.5%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$15.60

avg listing price — sweet spot $15–$100

Price range

Good$8.38–$26.69

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Okay+15.0%

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

Review moat

Bad8,013.83

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Market size

Bad$62K

$62K/yr · 16K searches

Competition

Bad98%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Is magox 400 profitable on Amazon?

According to Flapen's Amazon United States niche tracking, magox 400 is a $62K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May. Verdict: Skip it — 39/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

magox 400 market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 4K–5K; avg 750–1,000/product
Revenue / yr: $62K–$78K; units × avg price
Conversion rate: 24.5%
Avg BSR: #482
Page quality: 0%
Prime: 100%
Sponsored: 33%
Out of stock: 0.0%
Avg brand age: 83 months
Avg seller age: 165 days

Competition: brands, sellers & click share

The top 5 products capture 98% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

98%

Top 20: 100%

Open market

Mag-Ox 40094%
P Puregen Labs6%
Open — no brand owns it (0%)

magox 400 demand & seasonality

Weekly Amazon search volume, last 61 weeks — +15.0% search growth over the last 90 days.

Peak months: May · busiest ÷ quietest = 1.8×

Open Trend

Top magox 400 search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

magox 4006K/yr -0.9%21.0% conv.
mag ox 400 magnesium4K/yr +130.6%16.7% conv.
magox magnesium oxide 400mg tablets3K/yr +24.9%24.1% conv.
mag ox 4003K/yr -30.1%20.5% conv.

All search terms

Top magox 400 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 6 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Mag-Ox High Potency Magnesium Supplement Tablets 120 Count Pack of 2

Mag-Ox 400$20.514.7★9,875 rev

Mag-Ox Magnesium Supplement Pharmaceutical Grade Magnesium Oxide 483mg Most Concentrated Form of Magnesium 120 Tablets

Mag-Ox 400$10.554.7★9,875 rev

Mag-Ox High Potency Magnesium Supplement Tablets 60 Count

Mag-Ox 400$8.384.7★9,875 rev

Mag-Ox 400 Magnesium Mineral Dietary Supplement Tablets 483 mg Magnesium Oxide Pharmaceutical Grade 120 Count (Pack of 2)

Mag-Ox 400$26.694.8★1,996 rev

Magnesium 400mg [High Potency] Supplement Magnesium Oxide for Immune Support Muscle Recovery Leg Cramps Relaxation - 3 Pack | Total 360 Count

P Puregen Labs$18.734.6★8,231 rev

Newest

by launch date

Magnesium 400mg [High Potency] Supplement Magnesium Oxide for Immune Support Muscle Recovery Leg Cramps Relaxation - 3 Pack | Total 360 Count

P Puregen Labs$18.738,231 rev

4y ago

Magnesium 400mg [High Potency] Supplement Magnesium Oxide for Immune Support Muscle Recovery Leg Cramps and Relaxation 120 Tablets

P Puregen Labs$8.728,231 rev

5y ago

Mag-Ox High Potency Magnesium Supplement Tablets 120 Count Pack of 2

Mag-Ox 400$20.519,875 rev

6y ago

Mag-Ox High Potency Magnesium Supplement Tablets 60 Count

Mag-Ox 400$8.389,875 rev

14y ago

Mag-Ox Magnesium Supplement Pharmaceutical Grade Magnesium Oxide 483mg Most Concentrated Form of Magnesium 120 Tablets

Mag-Ox 400$10.559,875 rev

17y ago

What reviews say buyers love and hate about magox 400

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

What buyers love

Value For Money19%

“GOOD VALUE”

Quality-Overall18%

“Good quality supplement”

Magnesium16%

“Best supplement for those needing this kind of magnesium”

Advertised Vs Actual Product8%

“As advertised”

Sleep Quality6%

“Good for sleeping”

Efficiency4%

“Does the job well”

Ease Of Chewing/Swallowing3%

“Easy to swallow”

Vitamin3%

“Great supplement”

Acid Regulator/Stomach Ache Relief2%

“Doesn't upset your stomach”

Muscle Pain Relief2%

“and no muscle spasms”

What buyers complain about

Magnesium13%

“Can't be real magnesium oxide”

Sleep Quality12%

“This product did not help with sleep”

Functionality-Overall11%

“Didn't work”

Value For Money7%

“Pretty expensive and it didnt really work for me if it works for you great”

Side Effects4%

“Tongue burning”

Dosage4%

“don't take them together”

Ingredients-Overall4%

“This product has a cancer causing ingredient in it beware”

Strength4%

“Too strong causes shakiness and fatigue”

Advertised Vs Actual Product4%

“Deceptive label”

Safety Standards4%

“No child safety cap”

Top return reasons

Magnesium38%

Charging38%

Side Effects13%

Dosage13%

Common magox 400 questions

Is magox 400 profitable to sell on Amazon United States?: The niche generates $62K/yr across 6 tracked products. 90-day search growth is +15.0%. Flapen's verdict: Skip it (39/100).
How competitive is the magox 400 niche?: 2 brands and 25 sellers compete. The top 5 products take 98% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in magox 400?: Top complaints mined from reviews: Magnesium, Sleep Quality, Functionality-Overall. The return rate is 0.0%.
When does demand for magox 400 peak?: Demand peaks in May; the busiest month runs 1.8× the quietest.
What does it cost to enter the magox 400 niche?: Listings span $8.38–$26.69; the average listing price is $15.60 (sweet spot $15–$100). The average incumbent carries 8,014 reviews — the moat a new listing must climb.