Is magnesium complex profitable to sell on Amazon United States?

The niche generates $16.2M/yr across 20 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is -5.9%. Flapen's verdict: Worth a look (62/100).

How competitive is the magnesium complex niche?

18 brands and 74 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 58% of demand.

What do buyers complain about in magnesium complex?

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

When does demand for magnesium complex peak?

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

What does it cost to enter the magnesium complex niche?

Listings span $8.74–$36.67; the average listing price is $19.78 (sweet spot $15–$100). The average incumbent carries 13,861 reviews — the moat a new listing must climb.

Magnesium Complex

Worth a look

Shows a $16.2M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Incredible$16.2M

$16.2M/yr · 11.8M searches

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$19.78

avg listing price — sweet spot $15–$100

Brand share

Great58%

top-5 brand share — no brand owns this niche

Price range

Great$8.74–$36.67

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

Conversion

Good6.9%

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

Competition

Okay57%

top-5 click share — leaders hold, buyers still browse

Growth

Bad-5.9%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Review moat

Bad13,860.6

avg incumbent reviews — the moat a new listing must climb

Is magnesium complex profitable on Amazon?

According to Flapen's Amazon United States niche tracking, magnesium complex is a $16.2M/yr Amazon United States market (11.8M searches/yr). The top 5 brands hold 58% of demand. Demand peaks in Jul. Verdict: Worth a look — 62/100.

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

magnesium complex market size & sales

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

Units sold / yr: 800K–1.0M; avg 30,000–40,000/product
Revenue / yr: $15.8M–$19.8M; units × avg price
Conversion rate: 6.9%
Avg BSR: #112
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.7%
Avg brand age: 46 months
Avg seller age: 144 days

Competition: brands, sellers & click share

The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.

Brands

18 falling

Sellers

Top-5 brand share

58%

Top 20: 100%

Top-5 click share

57%

Top 20: 100%

Open market

37%

Toplux30%
Vitalibre9%
VEV6%
Nutricost6%
Micro Ingredients6%
BIOptimizers5%

magnesium complex demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.9% search growth over the last 90 days.

Peak months: Jul · busiest ÷ quietest = 1.8×

Open Trend

Top magnesium complex search terms shoppers use

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

magnesium complex for women4.4M/yr -8.7%5.0% conv.
magnesium complex5.3M/yr -8.2%4.8% conv.
magnesio complex924K/yr +3.6%2.3% conv.
magnesium complex for men196K/yr +16.3%5.1% conv.
magnesium sleep aid85K/yr -33.1%0.7% conv.
complex magnesium supplement38K/yr -13.2%3.7% conv.
magnesium blend38K/yr +6.4%2.6% conv.
complejo de magnesio45K/yr -29.5%2.1% conv.
magnesium glycinate and citrate37K/yr -11.4%2.1% conv.
multi magnesium supplement37K/yr -2.7%3.6% conv.

All search terms

Top magnesium complex 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 20 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Magnesium Complex Supplement 8 Elemental 1000mg - Magnesium Glycinate Citrate Malate Taurate Chelated for Easy Absorption for Bones Muscle Recovery Energy Vegan Non-GMO 90 Capsules

Toplux$28.464.6★6,948 rev

Vitalibre 10 in 1 Magnesium Complex 420mg Elemental Magnesium 120 Capsules

Vitalibre$10.024.7★7,920 rev

Nutricost Magnesium Complex Extra Strength 500mg 240 Capsules Gluten Free

Nutricost$16.564.7★4,455 rev

Magnesium Complex for Women | Glycinate Citrate & More 20-in-1 Formula with D3 K2 (MK-7) B6 (as P5P) & Ashwagandha | 240 Vegetarian Capsules Filler Free Non-GMO

Micro Ingredients$23.464.6★247 rev

Nature Made Magnesium Complex Supplement with Vitamin D & Zinc 60 Capsules

Nature Made$14.894.7★3,879 rev

Newest

by launch date

1000mg Magnesium Complex 8 in 1 for Women & Men Vegan Magnesium Supplement

BOSNETHUINH$10.98186 rev

3mo ago

Magnesium Complex for Women & Men 500mg (7-in-1) Magnesium Glycinate with Vegan D3 B6 and Manganese (Made In USA) + Gluconate Citrate Malate Taurate Orotate Carbonate (Oxide-Free) Small Capsule

Etta Vita$26.28402 rev

4mo ago

1000mg Magnesium Complex for Women & Men 16 in 1 High Absorption | Glycinate Citrate Malate Taurate | Sleep Nerve Heart Bone Muscle & Energy | Non-GMO Gluten-Free 120 Capsules

Yalvive$18.34168 rev

4mo ago

Magnesium Complex for Women | Glycinate Citrate & More 20-in-1 Formula with D3 K2 (MK-7) B6 (as P5P) & Ashwagandha | 240 Vegetarian Capsules Filler Free Non-GMO

Micro Ingredients$23.46247 rev

9mo ago

Magnesium Complex 700mg | 12-in-1 High Absorption Supplement | Glycinate Citrate Malate Taurate & More | Sleep Support Muscle Cramp Relief Stress Heart Bone & Nerve Health | 120 Vegan Capsules

Vccvaa$10.132,810 rev

1y ago

What reviews say buyers love and hate about magnesium complex

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

What buyers love

Sleep Quality19%

“Helps me sleep”

Magnesium17%

“Best Magnesium supplement”

Quality-Overall15%

“Best quality”

Vitamin5%

“Best vitamins”

Value For Money5%

“Great deal”

Muscle Pain Relief3%

“muscle recovery”

Advertised Vs Actual Product3%

“Exactly as advertised”

Efficiency3%

“Works perfectly”

Ease Of Chewing/Swallowing2%

“Easy to swallow”

Ease Of Use2%

“Great easy control”

What buyers complain about

Sleep Quality11%

“Did not help with sleep”

Magnesium11%

“Low magnesium”

Dosage8%

“1000mg is too high of dose”

Functionality-Overall6%

“Did not work”

Side Effects5%

“intolerant side effect”

Acid Regulator/Stomach Ache Relief5%

“Extreme bloating”

Value For Money4%

“OUTRAGEOUS PRICE”

Quality-Overall3%

“Poor Quality Control”

Size-Overall3%

“The bottle was small”

Pain Relief-Overall2%

“Caused me discomfort”

Top return reasons

Magnesium24%

Functionality-Overall16%

Dosage11%

Ingredients-Overall6%

Acid Regulator/Stomach Ache Relief6%

Sleep Quality6%

Value For Money3%