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Vitamin B3

Fail

Demand is soft, at -17.3% this quarter, so Vitamin B3 is a Fail.

Flapen Score
44
44 / 100
Ranks 1,348 of 2,035 Health & Personal Care niches · −4 vs the category median of 48
Market size
£139K/yr126K searches / yr
90-day growth
-17.3%search demand this quarter
Competition
76%top-5 click share · 12 brands · 14 sellers

Flapen Score

Vitamin B3 against its category

The dotted line is the Health & Personal Care average. Past it, Vitamin B3 is stronger. Inside it, weaker.

44Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Vitamin B3 market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Vitamin B3 126K times last year and spent an estimated £139K. The top 5 brands take 85% of clicks. Demand peaks in Oct. Flapen scores it 44 out of 100, a Fail.

01 · Demand

An estimated 10.0% of those searches ended in a purchase.

Shoppers searched for this 126K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 10.0% of those searches ended in a purchase. Searches in the last 90 days moved -17.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated £139K a year.

Searches, last 12 months
126K
Growth, 90 days vs prior 90
-17.3%
Conversion, latest week
10.0%
Market size, estimated
£139Ka year
Peak month
October1.7× the quietest month
Top search term
vitamin b332K searches a year

02 · Price

A sale here is worth £11.09.

Listings sell for £11.09 on average, from £4.94 to £28.85. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 500 to 750 of them. At £11.09 that is £6K to £8K a year per listing.

Average price
£11.09under the $15 to $100 sweet spot
Price range
£4.94–£28.85
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
13K–15K
Units per listing a year
500–750
Revenue per listing a year
£6K–£8K
Returns
0.1%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

73% 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 #9 within Vitamins. It carries 2,850 reviews at 4.45 stars, so a new listing needs social proof before a better product.

Sponsored listings
73%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#9in Vitamins
Average rating
4.45 starsAmazon United Kingdom average 4.36 stars
Average reviews
2,850per listing
Listings tracked
15

04 · Newcomers

Brands here are settling in.

The brands on the shelf have sold for 53 months on average, so the names here are settling in.

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

Products

Top Vitamin B3 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 76% of clicks. A locked shelf that new listings rarely crack.

£0£14K£28K£42K£56K1001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

12 falling

Sellers

14

Est. top-5 brand share

85%

Top 20: 100%

Est. top-5 click share

76%

Top 20: 100%

Open market

12%

  • Health4All43%
  • Carlyle17%
  • Nutricost12%
  • ALPHA019%
  • Horbäach3%
  • Bettervits3%
  • Open — no brand owns it (6 brands, 12%)

Demand

Vitamin B3 search demand

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

4K3KSpike '24Prime Day '25Spike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Oct · busiest ÷ quietest = 1.7×

Search terms

Top Vitamin B3 search terms shoppers use

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

  • vitamin b332K/yr
  • nicotinamide17K/yr
  • vitamin b3 niacinamide12K/yr
  • nicotinamide 500mg7K/yr
  • b3 vitamin12K/yr
  • niacinamide supplement10K/yr
  • b3 nicotinamide 500mg7K/yr
  • vitamin b3 nicotinamide 500mg3K/yr
  • vitamin b3 niacin5K/yr
  • vit b33K/yr

Reviews and returns

What reviews say buyers love and hate about Vitamin B3

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

16%of positive reviews mention “Value For Money”
12%of negative reviews mention “Advertised Vs Actual Product”
0.1%of orders come back
“Confusing? Nicotinamide or Niacin? This says Nicotinamide on the front but Niacin on the back.”
A buyer, on “Advertised Vs Actual Product”12% 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.

16 topics

NegativePositive

FAQ

Common Vitamin B3 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