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vitamin d3 50000 iu

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A deep review moat (28,995 avg reviews) — this niche doesn't clear our bar today.

Market size 64Growth 26Conversion 79Competition 14Returns 100Price range 77Avg price 81Brand share 25Review moat 11Quality gap 17

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$17.20

avg listing price — sweet spot $15–$100

Conversion

Great8.0%

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

Price range

Great$8.81–$35.95

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

Market size

Good$588K

$588K/yr · 428K searches

Growth

Okay+0.7%

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

Brand share

Okay90%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad83%

top-5 click share — a locked-up shelf

Review moat

Bad28,994.5

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, vitamin d3 50000 iu is a $588K/yr Amazon United States market (428K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 46/100.

Data updated Aug 5, 2026 · scored weekly · How we score niches

vitamin d3 50000 iu market data

Units sold / yr
40K–50K
avg 3,000–4,000/product
Revenue / yr
$688K–$860K
units × avg price
Conversion rate
8.0%
Avg BSR
#119
Page quality
0%
Prime
100%
Sponsored
83%
Out of stock
0.0%
Avg brand age
78 months
Avg seller age
149 days

Competition & brand share

The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 falling

Sellers

84

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

83%

Top 20: 100%

Open market

7%

  • Vitamatic35%
  • ForestLeaf28%
  • NOW Foods19%
  • Micro Ingredients4%
  • Nivagen3%
  • DEAL SUPPLEMENT3%
  • Open — no brand owns it (3 brands, 7%)

Demand & seasonality

Weekly Amazon search volume, last 101 weeks — +0.7% search growth over the last 90 days.
10K6KSpike '25DecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Top vitamin d3 50000 iu search terms

  • vitamin d3 50000 iu59K/yr
  • vitamin d 50000 iu54K/yr
  • vitamina d3 de 5000054K/yr
  • vitamin d 5000041K/yr
  • vitamina d 50000 iu24K/yr
  • high dose vitamin d23K/yr
  • vitamin d 500000 once weekly23K/yr
  • vitamin d3 5000021K/yr
  • vitamina d3 100000 ui9K/yr
  • 50000 vitamin d318K/yr
All search terms

Top vitamin d3 50000 iu 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%$59K20%$118K30%$176K40%$235K101001K10K100K1.0M Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 12 tracked products in this niche — three views at once, no toggling.

What buyers say about vitamin d3 50000 iu

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

What buyers love

Vitamin26%

“Awesome vitamin”

Quality-Overall19%

“the quality has been consistent with every purchase”

Value For Money11%

“Very affordable”

Ease Of Chewing/Swallowing7%

“Ease swallow”

Efficiency4%

“Effective”

Dosage4%

“Good weekly dose”

Advertised Vs Actual Product3%

“meets the need”

Ease Of Use3%

“Easy to open and use”

Taste-Overall2%

“Pleasant taste”

Energy Level2%

“my energy levels have improved”

What buyers complain about

Vitamin17%

“I don't know how effective the vitamin is yet'”

Dosage11%

“Too high a dosage”

Size-Overall9%

“These are small”

Functionality-Overall6%

“Did not work”

Taste-Overall4%

“there is no taste with the capsules”

Value For Money3%

“Too pricey”

Quality-Overall2%

“Poor quality control”

Allergies2%

“I started getting bad rashes on my face aftwr atarting my second bottle”

Smell1%

“Smells like coconut oil if someone is not ok with it”

Acid Regulator/Stomach Ache Relief1%

“So, I took one of these small pills and within 15 minutes I felt extremely light headed and also had stomach pain”

Top return reasons

Vitamin16%
Dosage16%
Value For Money16%
Quality-Overall16%
Functionality-Overall11%
Adhesion/Stickiness11%
Strength5%
Ingredients-Overall5%
Calcium5%

Common questions

Is vitamin d3 50000 iu profitable to sell on Amazon United States?
The niche generates $588K/yr across 12 tracked products. 90-day search growth is +0.7%. Flapen's verdict: Skip it (46/100).
How competitive is the vitamin d3 50000 iu niche?
9 brands and 84 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 90% of demand.
What do buyers complain about in vitamin d3 50000 iu?
Top complaints mined from reviews: Vitamin, Dosage, Size-Overall. The return rate is 0.0%.
When does demand for vitamin d3 50000 iu peak?
Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the vitamin d3 50000 iu niche?
Listings span $8.81–$35.95; the average listing price is $17.20 (sweet spot $15–$100). The average incumbent carries 28,995 reviews — the moat a new listing must climb.