Skip to content
50

vitamin b complex

Worth a look

Shows low returns (0.1%), but prices mostly outside the sweet spot ($3.50–$14.98) keeps it on the watch list.

Market size 73Growth 17Conversion 96Competition 35Returns 100Price range 0Avg price 22Brand share 64Review moat 24Quality gap 28

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Incredible14.1%

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

Market size

Good£802K

£802K/yr · 726K searches

Brand share

Good67%

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

Competition

Okay64%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad5,613.05

avg incumbent reviews — the moat a new listing must climb

Avg price

Bad£7.86

avg listing price — sweet spot $15–$100

Growth

Bad-15.0%

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

Price range

Bad£3.50–£14.98

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

According to Flapen's Amazon United Kingdom niche tracking, vitamin b complex is a £802K/yr Amazon United Kingdom market (726K searches/yr). The top 5 brands hold 67% of demand. Verdict: Worth a look — 50/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

vitamin b complex market data

Units sold / yr
80K–100K
avg 6,000–8,000/product
Revenue / yr
£629K–£786K
units × avg price
Conversion rate
14.1%
Avg BSR
#16
Page quality
0%
Prime
100%
Sponsored
89%
Out of stock
2.4%
Avg brand age
67 months
Avg seller age
164 days

Competition & brand share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 rising

Sellers

45

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

26%

  • WeightWorld25%
  • NEW LEAF PRODUCTS13%
  • Vitabiotics Ultra10%
  • Igennus Healthcare Nutrition10%
  • Solgar8%
  • Nutravita8%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -15.0% search growth over the last 90 days.
18K13KSpike '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top vitamin b complex search terms

  • vitamin b complex277K/yr
  • vitamin b108K/yr
  • b complex97K/yr
  • vitamin b complex high strength41K/yr
  • b complex vitamins high strength34K/yr
  • b vitamins31K/yr
  • vit b complex25K/yr
  • b vitamin complex26K/yr
  • rynw vitamin b complex4K/yr
  • b complex vitamins15K/yr
All search terms

Top vitamin b complex 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.

0%10%£80K20%£160K30%£241K40%£321K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 19 tracked products in this niche — three views at once, no toggling.

What buyers say about vitamin b complex

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

What buyers love

Value For Money18%

“Good value for money”

Vitamin17%

“Great vitamin”

Quality-Overall14%

“Great quality arrived on time thanks Amazon”

Ease Of Chewing/Swallowing12%

“so no problem swallowing”

Advertised Vs Actual Product5%

“As advertised”

Energy Level4%

“have more energy”

Ease Of Use4%

“Ease of Use”

Nutritional Content3%

“Love this company for nutrition needs”

Size-Overall3%

“Good size and amount”

Sleep Quality2%

“Helps me with sleep”

What buyers complain about

Smell12%

“Bad smell”

Dosage10%

“Unless your doctor tells you that you specifically need this high of a dose”

Taste-Overall6%

“There is no taste or after taste”

Size-Overall6%

“These tablets are quite big”

Side Effects6%

“Belly Cramps”

Vitamin6%

“I assume there maybe issues with my absorption of this vitamin”

Value For Money3%

“Cost me a day's pay”

Quality-Overall2%

“Not the best staff”

Functionality-Overall2%

“Dont work”

Acid Regulator/Stomach Ache Relief2%

“every time I took these I had awful stomach cramps”

Top return reasons

Color100%

Common questions

Is vitamin b complex profitable to sell on Amazon United Kingdom?
The niche generates £802K/yr across 19 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.0%. Flapen's verdict: Worth a look (50/100).
How competitive is the vitamin b complex niche?
16 brands and 45 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 67% of demand.
What do buyers complain about in vitamin b complex?
Top complaints mined from reviews: Smell, Dosage, Taste-Overall. The return rate is 0.1%.
When does demand for vitamin b complex peak?
Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the vitamin b complex niche?
Listings span £3.50–£14.98; the average listing price is £7.86 (sweet spot $15–$100). The average incumbent carries 5,613 reviews — the moat a new listing must climb.