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Vitamin D 1000iu

Fail

Prices span $3.13–$10.36, mostly outside the sweet spot, so Vitamin D 1000iu is a Fail.

Flapen Score
36
36 / 100
Ranks 1,876 of 2,035 Health & Personal Care niches · −12 vs the category median of 48
Market size
£220K/yr178K searches / yr
90-day growth
-46.6%search demand this quarter
Competition
85%top-5 click share · 11 brands · 66 sellers

Flapen Score

Vitamin D 1000iu against its category

The dotted line is the Health & Personal Care average. Past it, Vitamin D 1000iu is stronger. Inside it, weaker.

36Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Vitamin D 1000iu market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Vitamin D 1000iu 178K times last year and spent an estimated £220K. The top 5 brands take 85% of clicks. Demand peaks in Jan–Oct. Flapen scores it 36 out of 100, a Fail.

01 · Demand

An estimated 20.4% of those searches ended in a purchase.

Shoppers searched for this 178K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 20.4% of those searches ended in a purchase. Searches in the last 90 days moved -46.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated £220K a year.

Searches, last 12 months
178K
Growth, 90 days vs prior 90
-46.6%
Conversion, latest week
20.4%
Market size, estimated
£220Ka year
Peak month
October2.9× the quietest month
Top search term
vitamin d 1000iu80K searches a year

02 · Price

A sale here is worth £6.05.

Listings sell for £6.05 on average, from £3.13 to £10.36. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 2,500 to 3,000 of them. At £6.05 that is £15K to £18K a year per listing.

Average price
£6.05under the $15 to $100 sweet spot
Price range
£3.13–£10.36
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
30K–40K
Units per listing a year
2,500–3,000
Revenue per listing a year
£15K–£18K
Returns
0.1%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is ads and reviews.

91% 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 #70 within Vitamins. It carries 5,569 reviews at 4.66 stars, so a new listing needs social proof before a better product.

Sponsored listings
91%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#70in Vitamins
Average rating
4.66 starsAmazon United Kingdom average 4.36 stars
Average reviews
5,569per listing
Listings tracked
11

04 · Newcomers

0 of last year's 1 launches cleared the first-year sales bar.

1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 70 months on average, so the names here are established.

Launched, last 12 months
1
Successful launches
0Amazon's first-year sales bar
Average brand age
70 months

Products

Top Vitamin D 1000iu products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 85% of clicks. A locked shelf that new listings rarely crack.

£0£22K£44K£66K£88K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

11 rising

Sellers

66

Est. top-5 brand share

85%

Top 20: 100%

Est. top-5 click share

85%

Top 20: 100%

Open market

11%

  • Vitabiotics Ultra36%
  • Nutrition Geeks23%
  • VitaPremium9%
  • Fultium8%
  • Incite Nutrition8%
  • Nu U Nutrition5%
  • Open — no brand owns it (5 brands, 11%)

Demand

Vitamin D 1000iu search demand

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

9K7KSpike '24Spike '25Holiday '25Spike '26DecMarJunAugNovMarMay

Peak months: Jan, Oct · busiest ÷ quietest = 2.9×

Search terms

Top Vitamin D 1000iu search terms shoppers use

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

  • vitamin d 1000iu80K/yr
  • vitamin d3 1000 iu31K/yr
  • vitamin d 100015K/yr
  • vitamin d 25mcg/1000iu6K/yr
  • vitamin d tablets 1000iu8K/yr
  • vitamin d 1000 iu8K/yr
  • vitamin d3 1000iu7K/yr
  • vit d 1000iu5K/yr
  • vitamin d 25mcg3K/yr
  • ultra vitamin d 1000iu4K/yr

Reviews and returns

What reviews say buyers love and hate about Vitamin D 1000iu

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

19%of positive reviews mention “Vitamin”
16%of negative reviews mention “Size-Overall”
0.1%of orders come back
“its a small bottle”
A buyer, on “Size-Overall”16% 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.

15 topics

NegativePositive

FAQ

Common Vitamin D 1000iu questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data