Is vitamin d3 1000 iu profitable to sell on Amazon United States?

The niche generates $2.9M/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +1.0%. Flapen's verdict: Worth a look (50/100).

How competitive is the vitamin d3 1000 iu niche?

7 brands and 146 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 96% of demand.

What do buyers complain about in vitamin d3 1000 iu?

Top complaints mined from reviews: Vitamin, Dosage, Size-Overall. The return rate is 0.0%.

When does demand for vitamin d3 1000 iu peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the vitamin d3 1000 iu niche?

Listings span $5.38–$26.47; the average listing price is $12.66 (sweet spot $15–$100). The average incumbent carries 41,274 reviews — the moat a new listing must climb.

vitamin d3 1000 iu

Worth a look

Shows searches that convert (21.6% search→purchase), but a deep review moat (41,274 avg reviews) keeps it on the watch list.

Conversion

Incredible21.6%

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

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Market size

Incredible$2.9M

$2.9M/yr · 1.1M searches

Avg price

Good$12.66

avg listing price — sweet spot $15–$100

Price range

Good$5.38–$26.47

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

Growth

Okay+1.0%

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

Competition

Bad72%

top-5 click share — a locked-up shelf

Quality gap

Bad4.8★

avg incumbent rating — lower means beatable quality

Brand share

Bad96%

top-5 brand share — brand-locked demand

Review moat

Bad41,273.56

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, vitamin d3 1000 iu is a $2.9M/yr Amazon United States market (1.1M searches/yr). The top 5 brands hold 96% of demand. Verdict: Worth a look — 50/100.

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

vitamin d3 1000 iu market data

Units sold / yr: 200K–250K; avg 10,000–12,500/product
Revenue / yr: $2.5M–$3.2M; units × avg price
Conversion rate: 21.6%
Avg BSR: #117
Page quality: 0%
Prime: 100%
Sponsored: 81%
Out of stock: 0.0%
Avg brand age: 88 months
Avg seller age: 146 days

Competition & brand share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 rising

Sellers

146

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

Nature Made80%
NatureWise6%
NOW Foods5%
Nature's Bounty3%
Bronson3%
THORNE2%
Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +1.0% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top vitamin d3 1000 iu search terms

vitamin d3 1000iu267K/yr -5.2%19.4% conv.
nature made vitamin d3242K/yr -0.0%17.2% conv.
vitamin d 1000 iu128K/yr -0.1%15.0% conv.
nature made d378K/yr -2.4%19.8% conv.
d3 1000 iu45K/yr +15.6%18.8% conv.
vitamin d 100041K/yr -0.3%14.9% conv.
nature made vitamin d38K/yr -5.0%11.5% conv.
vitamin d3 1000 iu28K/yr +36.8%15.2% conv.
vitamin d3 100028K/yr +22.0%13.5% conv.
nature made d3 1000 iu22K/yr +12.7%32.6% conv.

All search terms

Top vitamin d3 1000 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nature Made Vitamin D3 1000 IU (25 mcg) 180 Vitamin D Softgels

Nature Made$8.674.8★60,500 rev

Nature Made Vitamin D3 1000 IU (25 mcg) 300 Vitamin D Softgels

Nature Made$10.794.8★60,500 rev

Nature Made Vitamin D3 2000 IU (50 mcg) 250 Vitamin D Softgels

Nature Made$12.904.8★24,865 rev

NatureWise Vitamin D3 1000IU Supplement Immune Support 360 Mini Softgels

NatureWise$11.664.7★195,696 rev

Nature Made Vitamin D3 2000 IU (50 mcg) 220 Vitamin D Tablets

Nature Made$12.524.7★26,370 rev

Newest

by launch date

Bronson Vitamin D3 1000 IU (25mcg) Low Dose Vitamin D 360 Tablets

Bronson$9.8593 rev

7mo ago

Nature Made Vitamin D3 K2 Supplement 30 Softgels

Nature Made$12.5310,717 rev

4y ago

Nature Made Vitamin D3 5000 IU (125 mcg) 360 Vitamin D Softgels

Nature Made$26.4767,638 rev

6y ago

NatureWise Vitamin D3 1000IU Supplement Immune Support 360 Mini Softgels

NatureWise$11.66195,696 rev

10y ago

Nature Made Vitamin D3 5000 IU (125 mcg) 180 Vitamin D Softgels

Nature Made$13.3667,638 rev

14y ago

What buyers say about vitamin d3 1000 iu

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

What buyers love

Vitamin23%

“Great vitamin”

Quality-Overall15%

“the quality seems consistent”

Value For Money14%

“Great deal”

Advertised Vs Actual Product8%

“accurately described”

Ease Of Chewing/Swallowing7%

“Ease swallow”

Ease Of Use4%

“easy to use”

Efficiency3%

“Works well”

Dosage3%

“Dosage is perfect for my age”

Nutritional Content2%

“Great supplement”

Natural Ingredients1%

“I trust Nature Made”

What buyers complain about

Vitamin13%

“No vitamins only a few”

Dosage10%

“that these are very low dose”

Size-Overall9%

“Too big”

Advertised Vs Actual Product6%

“Very misleading”

Value For Money5%

“Not a good value”

Functionality-Overall4%

“Cant provide results yet”

Ingredients-Overall3%

“Ingredients contain soybean oil”

Quality-Overall3%

“Not high quality”

Smell3%

“Stinky gross”

Ease Of Chewing/Swallowing2%

“Difficult to swallow”

Top return reasons

Value For Money20%

Vitamin16%

Dosage16%

Ingredients-Overall8%

Size-Overall8%

Functionality-Overall8%

Quality-Overall4%

Smell4%

Ease Of Chewing/Swallowing4%

Calcium4%

Common questions

Is vitamin d3 1000 iu profitable to sell on Amazon United States?: The niche generates $2.9M/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +1.0%. Flapen's verdict: Worth a look (50/100).
How competitive is the vitamin d3 1000 iu niche?: 7 brands and 146 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 96% of demand.
What do buyers complain about in vitamin d3 1000 iu?: Top complaints mined from reviews: Vitamin, Dosage, Size-Overall. The return rate is 0.0%.
When does demand for vitamin d3 1000 iu peak?: Demand is steady year-round — the busiest month runs 1.7× the quietest.
What does it cost to enter the vitamin d3 1000 iu niche?: Listings span $5.38–$26.47; the average listing price is $12.66 (sweet spot $15–$100). The average incumbent carries 41,274 reviews — the moat a new listing must climb.