Is vital core d3 k2 profitable to sell on Amazon United States?

The niche generates $238K/yr across 17 tracked products. 5 of 6 products launched in the last 360 days are still selling. 90-day search growth is -0.7%. Flapen's verdict: Worth a look (53/100).

How competitive is the vital core d3 k2 niche?

11 brands and 17 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 83% of demand.

What do buyers complain about in vital core d3 k2?

Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Dosage. The return rate is 0.0%.

When does demand for vital core d3 k2 peak?

Demand peaks in Jan–Dec; the busiest month runs 47.7× the quietest.

What does it cost to enter the vital core d3 k2 niche?

Listings span $12.11–$36.31; the average listing price is $26.40 (sweet spot $15–$100). The average incumbent carries 2,129 reviews — the moat a new listing must climb.

vital core d3 k2

Worth a look

Shows low returns (0.0%), but soft demand (-0.7% this quarter) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$26.40

avg listing price — sweet spot $15–$100

Price range

Great$12.11–$36.31

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

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Conversion

Good4.1%

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

Market size

Okay$238K

$238K/yr · 222K searches

Review moat

Okay2,128.76

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay83%

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

Competition

Okay66%

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

Growth

Bad-0.7%

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

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, vital core d3 k2 is a $238K/yr Amazon United States market (222K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Jan–Dec. Verdict: Worth a look — 53/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

vital core d3 k2 market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: $158K–$211K; units × avg price
Conversion rate: 4.1%
Avg BSR: #981
Page quality: 0%
Prime: 100%
Sponsored: 94%
Out of stock: 0.0%
Avg brand age: 28 months
Avg seller age: 153 days

Competition & brand share

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 rising

Sellers

Top-5 brand share

83%

Top 20: 100%

Top-5 click share

66%

Top 20: 100%

Open market

12%

true nutra29%
Clean Nutraceuticals21%
VivoNu20%
NEW AGE8%
VEV6%
NUSAVA5%
Open — no brand owns it (5 brands, 12%)

Demand & seasonality

Weekly Amazon search volume, last 73 weeks — -0.7% search growth over the last 90 days.

Peak months: Jan, Dec · busiest ÷ quietest = 47.7×

Open Trend

Top vital core d3 k2 search terms

true nutra178K/yr -2.6%3.1% conv.
tru nutra32K/yr +13.3%3.7% conv.
trunutra3K/yr +5.7%1.8% conv.
truenutra2K/yr +20.4%3.9% conv.
true nutra drops7K/yr -65.1%5.3% conv.

All search terms

Top vital core d3 k2 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 17 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

14-in-1 Berberine with Ceylon Cinnamon Supplement Liquid Drops 1800mg + 30:1 Liposomal Tech with Cayenne Pepper Soursop Chromium Bitter Melon Turmeric Moringa Gymnema Glucomannan GLP Support

VivoNu$12.114.3★858 rev

true nutra D3 K2Vitamin D3 K2 10 000 IU Magnesium Supplement Non-GMO Gluten-Free Supports Immune & Energy 300 Coconut Oil Softgels

true nutra$28.314.3★99 rev

Clean Nutra Berberine with Ceylon Cinnamon Supplement Liquid Drops + Bitter Melon Extract Glucomannan Gymnema Chromium Turmeric Organic Panax Ginseng Moringa

Clean Nutraceuticals$28.524.4★5,298 rev

true nutra Lymphatic ComplexLymphatic ComplexNatural Ingredients60 Soft Capsules

true nutra$27.893.8★28 rev

Clean Nutra Cayenne Pepper Drops Supplement Liquid + Hawthorn Berry Vitamin D3 K2 Beet Root Powder Ceylon Cinnamon Turmeric Curcumin Organic Panax Ginseng Berberine Extract 1 Pack

Clean Nutraceuticals$27.794.4★7,233 rev

Newest

by launch date

true nutra D3 K2 Vitamin D3 K2 Magnesium 10 000 IU Supplement Supports Immune & Energy Bone & Muscle Support 300 Coconut Oil Softgels 1 Pack

true nutra$27.5223 rev

3mo ago

True Nutra D3 K2 True Nutra Vitamin D3 K2 10 000 IU Magnesium Supplement 2 in 1 Vitamins Supplement D & K Non-GMO 300 Softgels (1pcs)

True Nutra Pure$24.924 rev

3mo ago

True nutra Magnesium ComplexAdvanced 8-in-1 Magnesium BlendGlycinate Citrate Malate Taurate etcHigh Formula90 Capsules

true nutra$28.7010 rev

4mo ago

true nutra Lymphatic ComplexLymphatic ComplexNatural Ingredients60 Soft Capsules

true nutra$27.8928 rev

4mo ago

true nutra D3 K2Vitamin D3 K2 10 000 IU Magnesium Supplement Non-GMO Gluten-Free Supports Immune & Energy 300 Coconut Oil Softgels

true nutra$28.3199 rev

6mo ago

What buyers say about vital core d3 k2

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

What buyers love

Quality-Overall17%

“Always consistent in quality”

Taste-Overall12%

“There is no unpleasant taste”

Vitamin8%

“Excellent vitamin supplement”

Energy Level6%

“Energy Boost”

Blood Sugar Level4%

“This has helped my sugar”

Sleep Quality4%

“Good sleep”

Value For Money4%

“Good price”

Advertised Vs Actual Product4%

“As described”

Magnesium3%

“Magnesium pills great to take”

Efficiency3%

“This product is indeed effective”

What buyers complain about

Taste-Overall21%

“taste is a bit strong”

Functionality-Overall7%

“DOESNT WORK”

Dosage7%

“Dosage check not good”

Smell6%

“Strong odor”

Blood Sugar Level4%

“This product doesnt work on blood sugar”

Side Effects4%

“Bad side effects”

Value For Money3%

“Too expensive”

Advertised Vs Actual Product3%

“Product is deceptive”

Vitamin3%

“The worst B-vitamins I have ever taken”

Acid Regulator/Stomach Ache Relief2%

“Extreme bloating”

Top return reasons

Functionality-Overall17%

Advertised Vs Actual Product12%

Taste-Overall8%

Magnesium7%

Regulates Digestion5%

Smell5%

Solubility3%

Thickness3%

Side Effects3%

Hard Feel3%

Common questions

Is vital core d3 k2 profitable to sell on Amazon United States?: The niche generates $238K/yr across 17 tracked products. 5 of 6 products launched in the last 360 days are still selling. 90-day search growth is -0.7%. Flapen's verdict: Worth a look (53/100).
How competitive is the vital core d3 k2 niche?: 11 brands and 17 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 83% of demand.
What do buyers complain about in vital core d3 k2?: Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Dosage. The return rate is 0.0%.
When does demand for vital core d3 k2 peak?: Demand peaks in Jan–Dec; the busiest month runs 47.7× the quietest.
What does it cost to enter the vital core d3 k2 niche?: Listings span $12.11–$36.31; the average listing price is $26.40 (sweet spot $15–$100). The average incumbent carries 2,129 reviews — the moat a new listing must climb.