Vitamin D3 4000 Iu
FailThe average product has 90,576 reviews to catch up to, so Vitamin D3 4000 Iu is a Fail.
- Flapen Score
- 40 / 100Ranks 12,248 of 14,768 Health & Household niches · −9 vs the category median of 4940
- Market size
- $171K/yr93K searches / yr
- 90-day growth
- -0.7%search demand this quarter
- Competition
- 84%top-5 click share · 6 brands · 69 sellers
Flapen Score
Vitamin D3 4000 Iu against its category
The dotted line is the Health & Household average. Past it, Vitamin D3 4000 Iu is stronger. Inside it, weaker.
Market
The Vitamin D3 4000 Iu market on Amazon at a glance
Shoppers on Amazon United States searched for Vitamin D3 4000 Iu 93K times last year and spent an estimated $171K. The top 5 brands take 97% of clicks. Flapen scores it 40 out of 100, a Fail.
01 · Demand
An estimated 12.8% of those searches ended in a purchase.
Shoppers searched for this 93K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 12.8% of those searches ended in a purchase. Searches in the last 90 days moved -0.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $171K a year.
- Searches, last 12 months
- 93K
- Growth, 90 days vs prior 90
- -0.7%
- Conversion, latest week
- 12.8%
- Market size, estimated
- $171Ka year
- Peak month
- February1.4× the quietest month
- Top search term
- vitamin d3 4000 iu33K searches a year
02 · Price
A sale here is worth $14.35.
Listings sell for $14.35 on average, from $5.76 to $34.10. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 1,500 to 2,000 of them. At $14.35 that is $22K to $29K a year per listing.
- Average price
- $14.35under the $15 to $100 sweet spot
- Price range
- $5.76–$34.10
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 13K–15K
- Units per listing a year
- 1,500–2,000
- Revenue per listing a year
- $22K–$29K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
80% 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 #92 within Vitamin D. It carries 90,576 reviews at 4.69 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 80%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #92in Vitamin D
- Average rating
- 4.69 starsAmazon United States average 4.42 stars
- Average reviews
- 90,576per listing
- Listings tracked
- 10
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 92 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 92 months
Products
Top Vitamin D3 4000 Iu 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 Aug 5, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
NatureWise Vitamin D3 4000 IU Supplement Immune Support 360 Mini Softgels
- Price
- $14.95
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 7y ago

NatureWise Vitamin D3 4000 IU Supplement Immune Support 90 Mini Softgels
- Price
- $8.65
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 2y ago

WeightWorld Vitamin D3 4000 IU (100mcg) for Bone Strength Muscle Health & Immune Support | 400 Days Supply | Vegan D3 Vitamin (Cholecalciferol) from Lichen | 400 VIT D3 Tablets Non-GMO Gluten-Free
- Price
- $15.59
- Rating
- 4.6/5
- Reviews
- 23,887
- Age
- 6y ago

Sports Research Vitamin D3 4000iu/100mcg with Coconut MCT Oil 360 Count
- Price
- $16.79
- Rating
- 4.4/5
- Reviews
- 104
- Age
- 2y ago

NatureWise Vitamin D3 4000 IU Supplement Immune Support 200 Mini Softgels
- Price
- $11.31
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 2y ago
Trending
estimated 90-day click momentum
WeightWorld Vitamin D3 4000 IU (100mcg) for Bone Strength Muscle Health & Immune Support | 400 Days Supply | Vegan D3 Vitamin (Cholecalciferol) from Lichen | 400 VIT D3 Tablets Non-GMO Gluten-Free
- Price
- $15.59
- Rating
- 4.6/5
- Reviews
- 23,887
- Age
- 6y ago

Pure Encapsulations Vitamin D3 & K2 120 Capsules
- Price
- $34.10
- Rating
- 4.8/5
- Reviews
- 5,090
- Age
- 3y ago

Nature Made Vitamin D3 2000 IU (50 mcg) 250 Vitamin D Softgels
- Price
- $12.90
- Rating
- 4.8/5
- Reviews
- 24,865
- Age
- 15y ago

NatureWise Vitamin D3 4000 IU Supplement Immune Support 90 Mini Softgels
- Price
- $8.65
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 2y ago

NatureWise Vitamin D3 4000 IU Supplement Immune Support 360 Mini Softgels
- Price
- $14.95
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 7y ago
Newest
by launch date
Sports Research Vitamin D3 4000iu/100mcg with Coconut MCT Oil 360 Count
- Price
- $16.79
- Rating
- 4.4/5
- Reviews
- 104
- Age
- 2y ago

NatureWise Vitamin D3 4000 IU Supplement Immune Support 90 Mini Softgels
- Price
- $8.65
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 2y ago

NatureWise Vitamin D3 4000 IU Supplement Immune Support 200 Mini Softgels
- Price
- $11.31
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 2y ago

NatureWise Vitamin D3 4000 IU Supplement Immune Support 30 Mini Softgels
- Price
- $5.76
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 2y ago

Pure Encapsulations Vitamin D3 & K2 120 Capsules
- Price
- $34.10
- Rating
- 4.8/5
- Reviews
- 5,090
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 84% of clicks. A locked shelf that new listings rarely crack.
Brands
6 flat
Sellers
69
Est. top-5 brand share
97%
Top 20: 100%
Est. top-5 click share
84%
Top 20: 100%
Open market
0%
- NatureWise74%
- Nature Made8%
- WeightWorld8%
- Sports Research5%
- Pure Encapsulations3%
- YounGlo Research3%
Demand
Vitamin D3 4000 Iu search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top Vitamin D3 4000 Iu search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- vitamin d3 4000 iu33K/yr
- vitamin d 4000 iu31K/yr
- vitamin d 400010K/yr
- vitamin d3 4000 iu softgels7K/yr
- d3 4000 iu7K/yr
- vitamin d3 40005K/yr
Reviews and returns
What reviews say buyers love and hate about Vitamin D3 4000 Iu
We read the reviews and the return reasons for every product selling here.
“which makes it harder for my body to process certain vitamins”
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.
19 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Vitamin D3 4000 Iu 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









