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D3

Maybe

Buyers convert on 19.7% of searches. But the average product has 51,700 reviews to catch up to, so D3 is a Maybe.

Flapen Score
57
57 / 100
Top 18% of 14,768 Health & Household niches · +8 vs the category median of 49
Market size
$6.2M/yr2.4M searches / yr
90-day growth
-6.8%search demand this quarter
Competition
54%top-5 click share · 15 brands · 191 sellers

Flapen Score

D3 against its category

The dotted line is the Health & Household average. Past it, D3 is stronger. Inside it, weaker.

57Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The D3 market on Amazon at a glance

Shoppers on Amazon United States searched for D3 2.4M times last year and spent an estimated $6.2M. The top 5 brands take 84% of clicks. Demand peaks in Jan. Flapen scores it 57 out of 100, a Maybe.

01 · Demand

An estimated 19.7% of those searches ended in a purchase.

Shoppers searched for this 2.4M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 19.7% of those searches ended in a purchase. Searches in the last 90 days moved -6.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $6.2M a year.

Searches, last 12 months
2.4M
Growth, 90 days vs prior 90
-6.8%
Conversion, latest week
19.7%
Market size, estimated
$6.2Ma year
Peak month
January1.6× the quietest month
Top search term
vitamin d3 5000 iu1.0M searches a year

02 · Price

A sale here is worth $13.18.

Listings sell for $13.18 on average, from $6.34 to $34.70. Amazon reports units sold in ranges. This niche sold 400K to 500K a year. The average listing sells 15,000 to 20,000 of them. At $13.18 that is $198K to $264K a year per listing.

Average price
$13.18under the $15 to $100 sweet spot
Price range
$6.34–$34.70
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
400K–500K
Units per listing a year
15,000–20,000
Revenue per listing a year
$198K–$264K
Returns
0.0%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

89% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #53 within Vitamin D. It carries 51,700 reviews at 4.77 stars, so a new listing needs social proof before a better product.

Sponsored listings
89%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#53in Vitamin D
Average rating
4.77 starsAmazon United States average 4.42 stars
Average reviews
51,700per listing
Listings tracked
27

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 81 months on average, so the names here are established.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
81 months

Products

Top D3 products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 54% of clicks. Leaders hold, but buyers still shop past them.

Brands

15 flat

Sellers

191

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

54%

Top 20: 93%

Open market

14%

  • Brand 131%
  • Brand 221%
  • Brand 312%
  • Brand 411%
  • Brand 510%
  • Brand 63%
  • Open — no brand owns it (9 brands, 14%)

Demand

D3 search demand

Weekly searches over the year, seasonality beneath. Pick a range.

80K60KBlack Friday '24Spike '25Prime Day '25DecMarJunAugNovMarMay

Peak months: Jan · busiest ÷ quietest = 1.6×

Search terms

Top D3 search terms shoppers use

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

  • vitamin d3 5000 iu1.0M/yr
  • d3 vitamin492K/yr
  • vitamin d 5000 iu193K/yr
  • d3 5000 iu107K/yr
  • now vitamin d395K/yr
  • vitamin d 500073K/yr
  • vitamin d3 500060K/yr
  • vitamin d for women39K/yr
  • d3 500029K/yr
  • d3 vitamin 5000 iu47K/yr

Reviews and returns

What reviews say buyers love and hate about D3

We read the reviews and the return reasons for every product selling here.

24%of positive reviews mention “Vitamin”
13%of negative reviews mention “Vitamin”
<0.1%of orders come back, a rate Amazon rounds to zero
“Not normal vitamin smell, more rancid”
A buyer, on “Vitamin”13% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

17 topics

NegativePositive

FAQ

Common D3 questions

Answered from the same tracked data.