D3
MaybeBuyers convert on 19.7% of searches. But the average product has 51,700 reviews to catch up to, so D3 is a Maybe.
- Flapen Score
- 57 / 100Top 18% of 14,768 Health & Household niches · +8 vs the category median of 4957
- Market size
- $6.2M/yr2.4M searches / yr
- 90-day growth
- -6.8%search demand this quarter
- Competition
- 54%top-5 click share · 15 brands · 191 sellers
Flapen Score
D3 against its category
The dotted line is the Health & Household average. Past it, D3 is stronger. Inside it, weaker.
Market
The D3 market on Amazon at a glance
Shoppers on Amazon United States searched for D3 2.4M times last year and spent an estimated $6.2M. The top 5 brands take 84% of clicks. Demand peaks in Jan. Flapen scores it 57 out of 100, a Maybe.
01 · Demand
An estimated 19.7% of those searches ended in a purchase.
Shoppers searched for this 2.4M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 19.7% of those searches ended in a purchase. Searches in the last 90 days moved -6.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $6.2M a year.
- Searches, last 12 months
- 2.4M
- Growth, 90 days vs prior 90
- -6.8%
- Conversion, latest week
- 19.7%
- Market size, estimated
- $6.2Ma year
- Peak month
- January1.6× the quietest month
- Top search term
- vitamin d3 5000 iu1.0M searches a year
02 · Price
A sale here is worth $13.18.
Listings sell for $13.18 on average, from $6.34 to $34.70. Amazon reports units sold in ranges. This niche sold 400K to 500K a year. The average listing sells 15,000 to 20,000 of them. At $13.18 that is $198K to $264K a year per listing.
- Average price
- $13.18under the $15 to $100 sweet spot
- Price range
- $6.34–$34.70
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 400K–500K
- Units per listing a year
- 15,000–20,000
- Revenue per listing a year
- $198K–$264K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
89% 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 #53 within Vitamin D. It carries 51,700 reviews at 4.77 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 89%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #53in Vitamin D
- Average rating
- 4.77 starsAmazon United States average 4.42 stars
- Average reviews
- 51,700per listing
- Listings tracked
- 27
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 81 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
- 81 months
Products
Top D3 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 5000IU Supplement Immune Support 360 Mini Softgels
- Price
- $13.60
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 12y ago

Nature Made Vitamin D3 5000 IU (125 mcg) 180 Vitamin D Softgels
- Price
- $13.36
- Rating
- 4.8/5
- Reviews
- 67,638
- Age
- 14y ago

Bronson Vitamin D3 5000iu (125mcg) Non-GMO Gluten-Free Soy-Free 360 Tablets
- Price
- $9.54
- Rating
- 4.8/5
- Reviews
- 2,941
- Age
- 3y ago

Natures Bounty Vitamin D3 5000 IU Softgels 240 Count
- Price
- $14.74
- Rating
- 4.8/5
- Reviews
- 83,838
- Age
- 13y ago

NOW Foods Supplements Vitamin D-3 5 000 IU High Potency Structural Support* 240 Softgels
- Price
- $11.61
- Rating
- 4.8/5
- Reviews
- 51,526
- Age
- 21y ago
Trending
estimated 90-day click momentum
VITBOOST Vitamin D3 K2 Complex - 5000 IU (125 mcg) D3 & K2 (MK-7) 90 mcg
- Price
- $9.60
- Rating
- 4.8/5
- Reviews
- 2,706
- Age
- 1y ago

Bronson Vitamin D3 5000iu (125mcg) Non-GMO Gluten-Free Soy-Free 360 Tablets
- Price
- $9.54
- Rating
- 4.8/5
- Reviews
- 2,941
- Age
- 3y ago

Nature Made Vitamin D3 5000 IU (125 mcg) 90 Vitamin D Softgels
- Price
- $8.67
- Rating
- 4.8/5
- Reviews
- 67,638
- Age
- 16y ago

Nature Made Vitamin D3 5000 IU (125 mcg) 360 Vitamin D Softgels
- Price
- $26.47
- Rating
- 4.8/5
- Reviews
- 67,638
- Age
- 6y ago

Nature Made Vitamin D3 1000 IU (25 mcg) 180 Vitamin D Softgels
- Price
- $8.67
- Rating
- 4.8/5
- Reviews
- 60,500
- Age
- 15y ago
Newest
by launch date
VITBOOST Vitamin D3 K2 Complex - 5000 IU (125 mcg) D3 & K2 (MK-7) 90 mcg
- Price
- $9.60
- Rating
- 4.8/5
- Reviews
- 2,706
- Age
- 1y ago

Bronson Vitamin D3 5000iu (125mcg) Non-GMO Gluten-Free Soy-Free 360 Tablets
- Price
- $9.54
- Rating
- 4.8/5
- Reviews
- 2,941
- Age
- 3y ago

Vitamatic Vitamin D3 5000 IU (125 mcg) 500 Softgels Made in USA
- Price
- $9.86
- Rating
- 4.8/5
- Reviews
- 2,374
- Age
- 3y ago

NatureWise Vitamin D3 5000IU Supplement Bone & Immune Health 30 Softgels
- Price
- $6.34
- Rating
- 4.7/5
- Reviews
- 195,696
- Age
- 5y ago

Nature Made Vitamin D3 5000 IU (125 mcg) 360 Vitamin D Softgels
- Price
- $26.47
- Rating
- 4.8/5
- Reviews
- 67,638
- Age
- 6y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 54% of clicks. Leaders hold, but buyers still shop past them.
Brands
15 flat
Sellers
191
Est. top-5 brand share
84%
Top 20: 100%
Est. top-5 click share
54%
Top 20: 93%
Open market
14%
- Nature Made31%
- NatureWise21%
- Nature's Bounty12%
- NOW Foods11%
- Bronson10%
- Nutricost3%
- Open — no brand owns it (9 brands, 14%)
Demand
D3 search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan · busiest ÷ quietest = 1.6×
Search terms
Top D3 search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- vitamin d3 5000 iu1.0M/yr
- d3 vitamin492K/yr
- vitamin d 5000 iu193K/yr
- d3 5000 iu107K/yr
- now vitamin d395K/yr
- vitamin d 500073K/yr
- vitamin d3 500060K/yr
- vitamin d for women39K/yr
- d3 500029K/yr
- d3 vitamin 5000 iu47K/yr
Reviews and returns
What reviews say buyers love and hate about D3
We read the reviews and the return reasons for every product selling here.
“Not normal vitamin smell, more rancid”
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.
17 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 D3 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









