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vitamin d kids

Skip it

Prices mostly outside the sweet spot ($3.44–$14.89) — this niche doesn't clear our bar today.

Market size 27Growth 2Conversion 93Competition 43Returns 100Price range 0Avg price 20Brand share 64Review moat 37Quality gap 25

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great11.4%

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

Brand share

Good67%

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

Competition

Okay59%

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

Review moat

Okay2,753.26

avg incumbent reviews — the moat a new listing must climb

Market size

Okay£117K

£117K/yr · 141K searches

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Avg price

Bad£7.31

avg listing price — sweet spot $15–$100

Growth

Bad-45.0%

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

Price range

Bad£3.44–£14.89

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

According to Flapen's Amazon United Kingdom niche tracking, vitamin d kids is a £117K/yr Amazon United Kingdom market (141K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Jan–Feb–Oct–Nov. Verdict: Skip it — 42/100.

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

vitamin d kids market data

Units sold / yr
15K–20K
avg 750–1,000/product
Revenue / yr
£110K–£146K
units × avg price
Conversion rate
11.4%
Avg BSR
#54
Page quality
0%
Prime
100%
Sponsored
95%
Out of stock
0.0%
Avg brand age
66 months
Avg seller age
164 days

Competition & brand share

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

Brands

15 flat

Sellers

74

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

59%

Top 20: 100%

Open market

26%

  • maxmedix19%
  • Horbäach13%
  • CHEWY VITES12%
  • BetterYou11%
  • Natures Aid11%
  • Wellkid7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -45.0% search growth over the last 90 days.
5K4KSpike '24Spike '25Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Feb, Oct, Nov · busiest ÷ quietest = 3.0×

Top vitamin d kids search terms

  • vitamin d kids38K/yr
  • kids vitamin d34K/yr
  • vitamin d for kids25K/yr
  • vitamin d gummies kids9K/yr
  • vitamin d for kids 7-146K/yr
  • vitamin d kids gummies5K/yr
  • kids vitamin d gummies4K/yr
  • vitamin d3 kids6K/yr
  • vitamin d children4K/yr
  • vitamin d3 for kids3K/yr
All search terms

Top vitamin d kids 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%5%£6K10%£12K15%£18K20%£23K101001K10K100K 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 d kids

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

What buyers love

Vitamin17%

“Good vitamin”

Quality-Overall16%

“Also, I think mine have lasted longer than I expected somehow, really pleased with them”

Taste-Overall15%

“Good taste”

Ease Of Use11%

“Ease of use”

Value For Money8%

“Value for the money”

Ease Of Chewing/Swallowing4%

“Chewable”

Flavor3%

“Nice flavour, kids like them”

Advertised Vs Actual Product2%

“Does the job”

Spray/Flow2%

“so the spray is ideal and tastes great”

Dosage2%

“The 400 IU dosage is appropriate for daily use”

What buyers complain about

Dosage12%

“High volume per dose”

Value For Money10%

“Bit expensive”

Ease Of Use8%

“Not as easy to administer as other products”

Size-Overall7%

“the liquid inside the bottle is tiny”

Taste-Overall6%

“Tasteless and finished very fast”

Age Suitability4%

“This is an unacceptable product for children and even adults”

Vitamin4%

“not very good flavour so I had to get other vitamins”

Oily/Greasy3%

“It is also very oily and smells odd”

Pain Relief-Overall2%

“has been crying in pain since”

Side Effects2%

“Made my baby vomit after every dose”

Top return reasons

Advertised Vs Actual Product100%

Common questions

Is vitamin d kids profitable to sell on Amazon United Kingdom?
The niche generates £117K/yr across 19 tracked products. 90-day search growth is -45.0%. Flapen's verdict: Skip it (42/100).
How competitive is the vitamin d kids niche?
15 brands and 74 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 67% of demand.
What do buyers complain about in vitamin d kids?
Top complaints mined from reviews: Dosage, Value For Money, Ease Of Use. The return rate is 0.1%.
When does demand for vitamin d kids peak?
Demand peaks in Jan–Feb–Oct–Nov; the busiest month runs 3.0× the quietest.
What does it cost to enter the vitamin d kids niche?
Listings span £3.44–£14.89; the average listing price is £7.31 (sweet spot $15–$100). The average incumbent carries 2,753 reviews — the moat a new listing must climb.