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51

Kids Vitamin D3 K2

Worth a look

Shows low returns (0.0%), but soft demand (-10.1% this quarter) keeps it on the watch list.

Market size 45Growth 20Conversion 59Competition 43Returns 100Price range 91Avg price 95Brand share 40Review moat 53Quality gap 27

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$22.96

avg listing price — sweet spot $15–$100

Price range

Great$13.32–$44.12

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

Conversion

Good5.1%

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

Review moat

Good1,388.24

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$237K

$237K/yr · 204K searches

Competition

Okay59%

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

Brand share

Okay81%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-10.1%

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

Is kids vitamin d3 k2 profitable on Amazon?

According to Flapen's Amazon United States niche tracking, kids vitamin d3 k2 is a $237K/yr Amazon United States market (204K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Jan. Verdict: Worth a look — 51/100.

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

kids vitamin d3 k2 market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.
Units sold / yr
15K–20K
avg 500–750/product
Revenue / yr
$344K–$459K
units × avg price
Conversion rate
5.1%
Avg BSR
#146
Page quality
0%
Prime
100%
Sponsored
97%
Out of stock
0.0%
Avg brand age
66 months
Avg seller age
161 days

Competition: brands, sellers & click share

The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 rising

Sellers

569

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

59%

Top 20: 91%

Open market

16%

  • MARYRUTH'S56%
  • NutraChamps10%
  • Zahler7%
  • Llama Naturals4%
  • LILICARE4%
  • Nordic Naturals3%
  • Open — no brand owns it (10 brands, 16%)

kids vitamin d3 k2 demand & seasonality

Weekly Amazon search volume, last 101 weeks — -10.1% search growth over the last 90 days.
6K4KBlack Friday '24Spike '25Prime Day '25Black Friday '25Spike '26DecMarJunAugNovMarMay

Peak months: Jan · busiest ÷ quietest = 2.1×

Top kids vitamin d3 k2 search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.
  • mary ruth vitamin d3 k229K/yr
  • kids vitamin d3 k229K/yr
  • vitamin d3 k2 kids21K/yr
  • mary ruth d3 k220K/yr
  • mary ruth calcium18K/yr
  • vitamin d3 k2 for kids15K/yr
  • d3 k2 kids11K/yr
  • kids d3 and k2 vitamin11K/yr
  • mary ruth calcium gummies7K/yr
  • mary ruth calcium supplement4K/yr
All search terms

Top kids vitamin d3 k2 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.

0%5%$12K10%$24K15%$36K20%$47K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What reviews say buyers love and hate about kids vitamin d3 k2

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

What buyers love

Taste-Overall20%

“Great Taste”

Vitamin19%

“Good Vitamin”

Quality-Overall9%

“High Quality & Easy to Take”

Flavor7%

“First off, the grape flavor is great”

Ease Of Use6%

“Easy to Use”

Nutritional Content3%

“its nice to have a reliable way to help fill in nutritional gaps”

Ingredients-Overall3%

“have clean ingredients”

Ease Of Chewing/Swallowing2%

“Very yummy chew that toddlers will love”

Value For Money2%

“Worth it”

Sweetness2%

“My toddler and I both take these and they are also delicious without all the extra added sugar”

What buyers complain about

Taste-Overall18%

“It has a strange metallic Berry taste”

Vitamin6%

“not vitamin K for absorption”

Flavor6%

“No flavor”

Value For Money6%

“Expensive”

Allergies3%

“my daughter had allergic reaction from it”

Ingredients-Overall2%

“Need ingredient list for these”

Artificial Sweeteners2%

“Nothing coated in sugar is good for you”

Smell2%

“Chemical smell”

Sleep Quality2%

“he has the hardest time sleeping through the night”

Functionality-Overall2%

“Not working”

Top return reasons

Flavor20%
Value For Money20%
Taste-Overall10%
Size-Overall5%
Dosage5%
Quality-Overall5%
Product Condition5%
Sweetness5%
Leak-Proof5%
Ease Of Chewing/Swallowing5%

Common kids vitamin d3 k2 questions

Is kids vitamin d3 k2 profitable to sell on Amazon United States?
The niche generates $237K/yr across 29 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -10.1%. Flapen's verdict: Worth a look (51/100).
How competitive is the kids vitamin d3 k2 niche?
16 brands and 569 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 81% of demand.
What do buyers complain about in kids vitamin d3 k2?
Top complaints mined from reviews: Taste-Overall, Vitamin, Flavor. The return rate is 0.0%.
When does demand for kids vitamin d3 k2 peak?
Demand peaks in Jan; the busiest month runs 2.1× the quietest.
What does it cost to enter the kids vitamin d3 k2 niche?
Listings span $13.32–$44.12; the average listing price is $22.96 (sweet spot $15–$100). The average incumbent carries 1,388 reviews — the moat a new listing must climb.