Is magnesium glycinate 100mg profitable to sell on Amazon United States?

The niche generates $1.6M/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Skip it (49/100).

How competitive is the magnesium glycinate 100mg niche?

5 brands and 61 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in magnesium glycinate 100mg?

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

When does demand for magnesium glycinate 100mg peak?

Demand peaks in May–Jun–Jul; the busiest month runs 3.1× the quietest.

What does it cost to enter the magnesium glycinate 100mg niche?

Listings span $8.48–$32.57; the average listing price is $19.60 (sweet spot $15–$100). The average incumbent carries 8,212 reviews — the moat a new listing must climb.

Magnesium Glycinate 100mg

Skip it

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

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great10.7%

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

Market size

Great$1.6M

$1.6M/yr · 781K searches

Avg price

Great$19.60

avg listing price — sweet spot $15–$100

Price range

Good$8.48–$32.57

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

Growth

Bad-1.7%

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

Review moat

Bad8,211.73

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad81%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Is magnesium glycinate 100mg profitable on Amazon?

According to Flapen's Amazon United States niche tracking, magnesium glycinate 100mg is a $1.6M/yr Amazon United States market (781K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jun–Jul. Verdict: Skip it — 49/100.

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

magnesium glycinate 100mg market size & sales

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

Units sold / yr: 80K–100K; avg 6,000–8,000/product
Revenue / yr: $1.6M–$2.0M; units × avg price
Conversion rate: 10.7%
Avg BSR: #197
Page quality: 0%
Prime: 100%
Sponsored: 55%
Out of stock: 0.0%
Avg brand age: 50 months
Avg seller age: 153 days

Competition: brands, sellers & click share

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

NOW Foods84%
Pure Encapsulations7%
PureFormulas5%
Nature Made3%
Metagenics1%
Open — no brand owns it (0%)

magnesium glycinate 100mg demand & seasonality

Weekly Amazon search volume, last 102 weeks — -1.7% search growth over the last 90 days.

Peak months: May, Jun, Jul · busiest ÷ quietest = 3.1×

Open Trend

Top magnesium glycinate 100mg search terms shoppers use

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

now magnesium glycinate248K/yr +2.4%11.2% conv.
magnesium glycinate 100mg177K/yr -15.5%6.4% conv.
magnesium glycinate now70K/yr -8.3%12.6% conv.
now foods magnesium glycinate54K/yr +30.9%9.3% conv.
now magnesium57K/yr -1.6%6.8% conv.
magnesium glycinate 100 mg25K/yr +18.9%6.6% conv.
magnesium now23K/yr -5.3%7.9% conv.
magnesium glycinate now foods13K/yr +36.7%11.2% conv.
magnesium 100mg17K/yr +10.8%4.3% conv.
now magnesium glycinate 400 mg19K/yr -26.9%7.4% conv.

All search terms

Top magnesium glycinate 100mg 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 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

NOW Foods Supplements Magnesium Glycinate 100 mg Highly Absorbable Form 180 Tablets

NOW Foods$19.074.7★8,333 rev

Now Foods Magnesium Glycinate 240 Tablets - Supports Healthy Muscle and Nerve Functions - Non-GMO

NOW Foods$28.864.8★999 rev

Now Supplements Magnesium Glycinate with BioPerine 180 Veg Capsules

NOW Foods$17.484.7★945 rev

NOW Supplements Magnesium Glycinate 100 mg Highly Absorbable Form 90 Tablets

NOW Foods$13.034.7★8,333 rev

Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief Sleep Heart Health Nerves Muscles and Metabolism* - with Magnesium Glycinate - 90 Capsules

Pure Encapsulations$26.104.7★49,969 rev

Newest

by launch date

NOW Supplements Magnesium Glycinate 100 mg Highly Absorbable Form 90 Tablets

NOW Foods$13.038,333 rev

9mo ago

Now Supplements Magnesium Glycinate with BioPerine 60 Veg Capsules

NOW Foods$8.48449 rev

1y ago

Now Supplements Magnesium Glycinate with BioPerine 180 Veg Capsules

NOW Foods$17.48945 rev

2y ago

NOW Foods Supplements Magnesium 400 mg Supports Energy Production Enzyme Function Nervous System Support 360 Veg Capsules

NOW Foods$30.45549 rev

2y ago

Nature Made High Absorption Magnesium Glycinate Gummies 40 Count

Nature Made$12.183,364 rev

3y ago

What reviews say buyers love and hate about magnesium glycinate 100mg

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

What buyers love

Sleep Quality23%

“Help with sleep”

Quality-Overall19%

“Better Quality than most”

Magnesium13%

“Best magnesium supplement”

Vitamin4%

“Favorite vitamin”

Value For Money3%

“Good Value”

Advertised Vs Actual Product3%

“As advertised”

Muscle Pain Relief3%

“Eases muscle cramping”

Stress/Anxiety2%

“It also helps with stress”

Ease Of Chewing/Swallowing2%

“I have to choke them down so having a good tasting chew is a winner”

Taste-Overall2%

“There is no unpleasant taste”

What buyers complain about

Sleep Quality15%

“I was having trouble sleeping”

Magnesium7%

“Maybe not pure magnesium glycinate or no quality control”

Size-Overall6%

“These are extremely large tablets”

Dosage5%

“High dose”

Side Effects5%

“Bad Side effects”

Acid Regulator/Stomach Ache Relief4%

“I quickly began having bloating”

Quality-Overall4%

“Bad quality”

Functionality-Overall4%

“in my case it just didnt stand out as particularly effective”

Ease Of Chewing/Swallowing3%

“mushy chew”

Taste-Overall3%

“Weird Taste”

Top return reasons

Magnesium24%

Dosage14%

Functionality-Overall13%

Acid Regulator/Stomach Ache Relief10%

Size-Overall5%

Sleep Quality5%

Value For Money5%

Salt Content3%

Ease Of Cleaning3%

Eco Friendliness3%

Common magnesium glycinate 100mg questions

Is magnesium glycinate 100mg profitable to sell on Amazon United States?: The niche generates $1.6M/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Skip it (49/100).
How competitive is the magnesium glycinate 100mg niche?: 5 brands and 61 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in magnesium glycinate 100mg?: Top complaints mined from reviews: Sleep Quality, Magnesium, Size-Overall. The return rate is 0.0%.
When does demand for magnesium glycinate 100mg peak?: Demand peaks in May–Jun–Jul; the busiest month runs 3.1× the quietest.
What does it cost to enter the magnesium glycinate 100mg niche?: Listings span $8.48–$32.57; the average listing price is $19.60 (sweet spot $15–$100). The average incumbent carries 8,212 reviews — the moat a new listing must climb.