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

The niche generates $290K/yr across 20 tracked products. 8 of 8 products launched in the last 360 days are still selling. 90-day search growth is -28.5%. Flapen's verdict: Skip it (48/100).

How competitive is the vitamin d3 k2 magnesium niche?

16 brands and 83 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 67% of demand.

What do buyers complain about in vitamin d3 k2 magnesium?

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

When does demand for vitamin d3 k2 magnesium peak?

Demand peaks in Jan–Feb–May; the busiest month runs 1.9× the quietest.

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

Listings span $9.38–$29.06; the average listing price is $17.79 (sweet spot $15–$100). The average incumbent carries 7,300 reviews — the moat a new listing must climb.

vitamin d3 k2 magnesium

Skip it

Soft demand (-28.5% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$17.79

avg listing price — sweet spot $15–$100

Price range

Good$9.38–$29.06

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

Brand share

Good67%

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

Conversion

Good5.3%

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

Market size

Good$290K

$290K/yr · 309K searches

Competition

Okay63%

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

Review moat

Bad7,300.35

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Growth

Bad-28.5%

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

According to Flapen's Amazon United States niche tracking, vitamin d3 k2 magnesium is a $290K/yr Amazon United States market (309K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Jan–Feb–May. Verdict: Skip it — 48/100.

Data updated Aug 5, 2026 · scored weekly · How we score niches

vitamin d3 k2 magnesium market data

Units sold / yr: 15K–20K; avg 750–1,000/product
Revenue / yr: $267K–$356K; units × avg price
Conversion rate: 5.3%
Avg BSR: #167
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 49 months
Avg seller age: 152 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 rising

Sellers

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

63%

Top 20: 100%

Open market

26%

VEV25%
New Elements14%
Bronson12%
Sandhu's8%
Totaria7%
NatureWise6%

Demand & seasonality

Weekly Amazon search volume, last 83 weeks — -28.5% search growth over the last 90 days.

Peak months: Jan, Feb, May · busiest ÷ quietest = 1.9×

Open Trend

Top vitamin d3 k2 magnesium search terms

d3 k2 magnesium supplement30K/yr +31.8%4.5% conv.
d3 k2 magnesium59K/yr -56.4%3.9% conv.
vitamin d3 k2 magnesium44K/yr -44.5%4.5% conv.
k2 d3 magnesium vitamin supplement33K/yr -43.9%5.3% conv.
vitamin d k2 magnesium20K/yr -30.0%4.9% conv.
vitamin d3 k2 magnesium glycinate12K/yr +3.1%4.1% conv.
magnesium glycinate d3 k211K/yr +25.2%4.5% conv.
vitamin d with k2 and magnesium13K/yr -40.6%4.4% conv.
magnesium d3 k210K/yr -13.5%4.1% conv.
vitamin d3 k2 magnesium zinc8K/yr +1.7%2.2% conv.

All search terms

Top vitamin d3 k2 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 20 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

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

VEV$21.294.7★2,690 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$17.744.6★1,549 rev

Bronson Vitamin K2+D3 Magnesium Glycinate Supplement 60 Capsules

Bronson$9.384.7★178 rev

Vitamin D3 K2 5000 IU 120mcg Magnesium Zinc B6 Quercetin Capsules 120 Count

Sandhu's$29.064.7★1,937 rev

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★450 rev

Newest

by launch date

Toniiq 10 000IU Liposomal Vitamin D3 K2 Magnesium Supplement

Toniiq$19.2940 rev

2mo 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$21.5088 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$12.25133 rev

5mo ago

Bronson Vitamin K2+D3 Magnesium Glycinate Supplement 60 Capsules

Bronson$9.38178 rev

5mo ago

JME Core Vitamin D3 K2 10 000 IU Magnesium Supplement Bone & Vascular Health Support - Immune Function Support* with D3 and K2 (MK-7) Magnesium Glycinate & Malate Zinc Citrate -300 Softgels

JME$20.4875 rev

6mo ago

What buyers say about vitamin d3 k2 magnesium

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

What buyers love

Vitamin21%

“Best vitamins”

Quality-Overall20%

“Excellent Quality”

Value For Money6%

“Great buy”

Ease Of Chewing/Swallowing6%

“Easy to Swallow”

Advertised Vs Actual Product3%

“As Advertised”

Efficiency3%

“Works Well”

Sleep Quality3%

“Good sleep”

Ease Of Use3%

“Easy peasy”

Energy Level3%

“has helped with my energy”

Magnesium3%

“good quality magnesium supplement”

What buyers complain about

Vitamin11%

“Bad vitamins”

Dosage11%

“Dosage is too high”

Value For Money7%

“Too expensive”

Side Effects4%

“Beware of side effects”

Size-Overall4%

“These are small”

Magnesium3%

“Ineffective Magnesium Supplement”

Allergies2%

“Can cause allergic reaction”

Advertised Vs Actual Product2%

“Misleading size”

Functionality-Overall2%

“no noticeable results”

Quality-Overall2%

“the quality control on the bottle I received was not there”

Top return reasons

Value For Money36%

Dosage15%

Vitamin10%

Magnesium6%

Functionality-Overall6%

Certifications4%

Solubility3%

Ingredients-Overall3%

Hard Feel3%

Color Fading/Discoloration2%

Common questions

Is vitamin d3 k2 magnesium profitable to sell on Amazon United States?: The niche generates $290K/yr across 20 tracked products. 8 of 8 products launched in the last 360 days are still selling. 90-day search growth is -28.5%. Flapen's verdict: Skip it (48/100).
How competitive is the vitamin d3 k2 magnesium niche?: 16 brands and 83 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 67% of demand.
What do buyers complain about in vitamin d3 k2 magnesium?: Top complaints mined from reviews: Vitamin, Dosage, Value For Money. The return rate is 0.0%.
When does demand for vitamin d3 k2 magnesium peak?: Demand peaks in Jan–Feb–May; the busiest month runs 1.9× the quietest.
What does it cost to enter the vitamin d3 k2 magnesium niche?: Listings span $9.38–$29.06; the average listing price is $17.79 (sweet spot $15–$100). The average incumbent carries 7,300 reviews — the moat a new listing must climb.