Is k2 d3 magnesium profitable to sell on Amazon United States?

The niche generates $59K/yr across 24 tracked products. 9 of 12 products launched in the last 360 days are still selling. 90-day search growth is -5.2%. Flapen's verdict: Skip it (43/100).

How competitive is the k2 d3 magnesium niche?

16 brands and 48 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 79% of demand.

What do buyers complain about in k2 d3 magnesium?

Top complaints mined from reviews: Dosage, Vitamin, Value For Money. The return rate is 0.0%.

What does it cost to enter the k2 d3 magnesium niche?

Listings span $9.36–$34.89; the average listing price is $17.90 (sweet spot $15–$100). The average incumbent carries 3,839 reviews — the moat a new listing must climb.

K2 D3 Magnesium

Skip it

A small market ($59K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$17.90

avg listing price — sweet spot $15–$100

Price range

Great$9.36–$34.89

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

Conversion

Good5.3%

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

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Competition

Okay65%

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

Review moat

Okay3,838.96

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-5.2%

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

Market size

Bad$59K

$59K/yr · 62K searches

Signals No Dominant Brand

Is k2 d3 magnesium profitable on Amazon?

According to Flapen's Amazon United States niche tracking, k2 d3 magnesium is a $59K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 79% of demand. Verdict: Skip it — 43/100.

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

k2 d3 magnesium market size & sales

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

Units sold / yr: 3K–4K; avg 100–250/product
Revenue / yr: $54K–$72K; units × avg price
Conversion rate: 5.3%
Avg BSR: #347
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 42 months
Avg seller age: 151 days

Competition: brands, sellers & click share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 rising

Sellers

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

65%

Top 20: 96%

Open market

17%

Totaria18%
New Elements18%
NatureWise16%
VEV15%
Bronson12%
Sandhu's4%
Open — no brand owns it (10 brands, 17%)

k2 d3 magnesium demand & seasonality

Weekly Amazon search volume, last 39 weeks — -5.2% search growth over the last 90 days.

Open Trend

Top k2 d3 magnesium search terms shoppers use

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

vitamin d3 k2 magnesium glycinate12K/yr +0.2%4.0% conv.
magnesium glycinate d3 k211K/yr +19.2%5.5% conv.
magnesium d3 k210K/yr -17.8%4.3% conv.
d3 k2 magnesium glycinate6K/yr -13.2%4.0% conv.
magnesium glycinate with d3 and k26K/yr -6.3%5.3% conv.
magnesium glycinate vitamin d3 k26K/yr -1.6%4.3% conv.
magnesium with d3 and k24K/yr -13.9%4.3% conv.
magnesium k2 d34K/yr -11.5%5.0% conv.
magnesium d3 k2 supplement3K/yr -24.1%5.0% conv.

All search terms

Top k2 d3 magnesium 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

9-in-1 Magnesium Glycinate 500mg + Vitamin D3 5000 IU & K2 Complex - High Absorption - Healthy Stress Sleep Muscle Function Bone Health & Energy Supports | Non-GMO Gluten-Free 120 Softgels

Totaria$19.774.6★441 rev

VEV Corefeel Vitamin D3 K2 10 000 IU Magnesium Supplement 300 Softgels

VEV$21.344.7★2,552 rev

Bronson Vitamin K2+D3 Magnesium Glycinate Supplement 60 Capsules

Bronson$9.364.6★155 rev

NatureWise Magnesium Glycinate 550mg + High-Dose 10000 IU Vitamin D3 K2 100 mcg - D3 K2 Magnesium Supplement - Chelated for High Absorption - Bone Support - Non-GMO USA Manufactured - [30-Day Supply]

NatureWise$14.354.6★128 rev

New Elements Vitamin D3 K2 10 000 IU with Magnesium Glycinate 500mg - Bone Health Immune Support Energy & Mood - Non-GMO Gluten-Free Sugar-Free Softgels for Women & Men (60 softgels)

New Elements$17.714.6★1,537 rev

Newest

by launch date

Toniiq 10 000 IU Liposomal Vitamin D3 K2 Magnesium Supplement 200mcg All-Trans MK-7 & 300mg Liposomal Magnesium Glycinate with Zinc & Boron Vegan Third-Party Tested 120 Capsules

Toniiq$19.2637 rev

2mo ago

NatureWise Vitamin D3 K2 Magnesium Glycinate 275mg - Extra Strength Vitamin D3 5000IU + K2 50mcg - High Absorption Chelated Magnesium - Bone Support - Non-GMO USA Manufactured - [90 Day Supply]

NatureWise$19.4324 rev

3mo ago

Vitamatic Magnesium Glycinate 200 mg (Elemental) with Vitamin D3 5000 IU & K2 200 mcg High Absorption Bone Muscle & Heart Support 180 Veg Capsules Non-GMO Made in USA

Vitamatic$9.6932 rev

4mo ago

Vitamin D3 K2 10000 IU Magnesium Supplement - Extra Strength with 10 000 IU Vitamin D3 + K2 MK-7 200 mcg and Magnesium Glycinate Supplements Complex - 300 Softgels

THEREXA$21.1387 rev

4mo ago

NatureWise Magnesium Glycinate 550mg + 2000 IU Vitamin D3 K2 100 mcg - D3 K2 Magnesium Supplement - Chelated for High Absorption - Bone Support - Non-GMO USA Manufactured - [30-Day Supply]

NatureWise$12.27128 rev

5mo ago

What reviews say buyers love and hate about k2 d3 magnesium

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

What buyers love

Quality-Overall21%

“Great quality and exactly as described”

Vitamin19%

“Best vitamins”

Value For Money6%

“Great deal”

Ease Of Chewing/Swallowing6%

“Its easy to consume”

Magnesium4%

“Great Magnesium supplement”

Sleep Quality4%

“Better sleep”

Ease Of Use3%

“Ease of use”

Advertised Vs Actual Product3%

“As described”

Energy Level3%

“Boosts energy”

Efficiency2%

“Works fast”

What buyers complain about

Dosage11%

“Dosage is too high”

Vitamin8%

“Bad vitamins”

Value For Money5%

“A bit overpriced”

Magnesium4%

“Ineffective Magnesium Supplement”

Side Effects4%

“Beware of side effects”

Size-Overall4%

“Small”

Taste-Overall2%

“it doesnt taste”

Allergies2%

“I thought I was allergic to something else”

Acid Regulator/Stomach Ache Relief2%

“Too atrong for my stomach”

Sleep Quality2%

“Caused insomnia instead of better sleep”

Top return reasons

Value For Money34%

Magnesium11%

Vitamin9%

Dosage8%

Certifications5%

Ingredients-Overall4%

Hard Feel4%

Solubility4%

Color Fading/Discoloration3%

Joint Pain3%

Common k2 d3 magnesium questions

Is k2 d3 magnesium profitable to sell on Amazon United States?: The niche generates $59K/yr across 24 tracked products. 9 of 12 products launched in the last 360 days are still selling. 90-day search growth is -5.2%. Flapen's verdict: Skip it (43/100).
How competitive is the k2 d3 magnesium niche?: 16 brands and 48 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in k2 d3 magnesium?: Top complaints mined from reviews: Dosage, Vitamin, Value For Money. The return rate is 0.0%.
What does it cost to enter the k2 d3 magnesium niche?: Listings span $9.36–$34.89; the average listing price is $17.90 (sweet spot $15–$100). The average incumbent carries 3,839 reviews — the moat a new listing must climb.