Vitamin D
FailShoppers spend an estimated $18K a year here, so Vitamin D is a Fail.
- Flapen Score
- 42 / 100Top 24% of 198 Health, Household and Personal Care niches · +5 vs the category median of 3742
- Market size
- $18K/yr19K searches / yr
- 90-day growth
- -11.0%search demand this quarter
- Competition
- 53%top-5 click share · 12 brands · 26 sellers
Flapen Score
Vitamin D against its category
The dotted line is the Health, Household and Personal Care average. Past it, Vitamin D is stronger. Inside it, weaker.
Market
The Vitamin D market on Amazon at a glance
Shoppers on Amazon Singapore searched for Vitamin D 19K times last year and spent an estimated $18K. The top 5 brands take 83% of clicks. Flapen scores it 42 out of 100, a Fail.
01 · Demand
An estimated 4.8% of those searches ended in a purchase.
Shoppers searched for this 19K times in the last 12 months. That counts every search on Amazon Singapore for this niche's terms. An estimated 4.8% of those searches ended in a purchase. Searches in the last 90 days moved -11.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated $18K a year.
- Searches, last 12 months
- 19K
- Growth, 90 days vs prior 90
- -11.0%
- Conversion, latest week
- 4.8%
- Market size, estimated
- $18Ka year
- Top search term
- vitamin d13K searches a year
02 · Price
A sale here is worth $19.61.
Listings sell for $19.61 on average, from $6.59 to $39.93. Amazon reports units sold in ranges. This niche sold 2K to 2K a year. The average listing sells 0 to 100 of them. At $19.61 that is $0 to $2K a year per listing.
- Average price
- $19.61inside the $15 to $100 sweet spot
- Price range
- $6.59–$39.93
- Amazon Singapore median price
- $30.00across 1,590 niches
- Units sold a year
- 2K–2K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$2K
- Returns
- 0.0%of orders · Amazon Singapore median 0.0%
03 · Entry bar
The bar here is reviews.
24% of listings pay for placement with sponsored ads. 72% ship with Prime. On an average day, 8.2% of listings are out of stock. The average listing ranks #655 within Health, Household and Personal Care. It carries 19,511 reviews at 4.70 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 24%
- Prime listings
- 72%
- Out of stock, average day
- 8.2%
- Average rank
- #655in Health, Household and Personal Care
- Average rating
- 4.70 starsAmazon Singapore average 4.47 stars
- Average reviews
- 19,511per listing
- Listings tracked
- 25
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 105 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
- 105 months
Products
Top Vitamin D 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 Jul 24, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Now Foods Supplements Vitamin D3 5000 IU High Potency Structural Support Softgels 240 Count
- Price
- $17.18
- Rating
- 4.8/5
- Reviews
- 40,802
- Age
- 16y ago

NatureWise Vitamin D3 5000iu (125 mcg) 1 Year Supply for Healthy Muscle Function and Immune Support Non-GMO Gluten Free in Cold-Pressed Olive Oil Packaging Vary (Mini Softgel) 360 Count
- Price
- $20.60
- Rating
- 4.8/5
- Reviews
- 139,663
- Age
- 12y ago

NOW Foods Supplements Vitamin D-3 2 000 IU High Potency Structural Support 240 Softgels
- Price
- $13.67
- Rating
- 4.8/5
- Reviews
- 20,588
- Age
- 16y ago

Now Foods Vitamin D-3 1000 IU Softgels 180ct
- Price
- $8.31
- Rating
- 4.8/5
- Reviews
- 4,752
- Age
- 13y ago

Nature Made Vitamin D3 1000 IU (25 mcg) Dietary Supplement for Bone Teeth Muscle and Immune Health Support 300 Softgels 300 Day Supply
- Price
- $20.56
- Rating
- 4.8/5
- Reviews
- 46,224
- Age
- 15y ago
Trending
estimated 90-day click momentum
Natures Bounty Vitamin D3 Immune Support 125 mcg (5000iu) Rapid Release Softgels 240 Ct
- Price
- $22.04
- Rating
- 4.8/5
- Reviews
- 80,829
- Age
- 12y ago

Now Foods Supplements Vitamin D3 5000 IU High Potency Structural Support Softgels 240 Count
- Price
- $17.18
- Rating
- 4.8/5
- Reviews
- 40,802
- Age
- 16y ago

Solgar Vitamin D3 Cholecalciferol 250 MCG 10000 IU Softgels Helps Maintain Healthy Bones Teeth Immune System Support Non GMO Gluten Free Dairy Free Servings 180 Count
- Price
- $22.83
- Rating
- 4.8/5
- Reviews
- 13,561
- Age
- 5y ago

GNC 1000 IU Vitamin D3 180 Tablets
- Price
- $35.41
- Rating
- 4.6/5
- Reviews
- 247
- Age
- 6y ago

NOW Supplements Vitamin D-3 50 000 IU Softgels 50 softgels
- Price
- $18.46
- Rating
- 4.8/5
- Reviews
- 3,149
- Age
- 5y ago
Newest
by launch date
Thorne Vitamin D Liquid - Vitamin D Supplement - Supports Healthy Bones and Muscles Cardiovascular Health and Immune Function* - 1 Fl Oz (30 ml)- 600 Servings
- Price
- $31.14
- Rating
- 4.6/5
- Reviews
- 1,010
- Age
- 2y ago

Swanson Vitamin D3 - Highest Potency 5 000 Iu (125 mcg) 250 Sgels Bone Immune Cardiovascular Calcium Absorption Mood Muscle and Metabolic Health
- Price
- $16.11
- Rating
- 4.8/5
- Reviews
- 1,702
- Age
- 2y ago

Thorne Vitamin D-1000 - Vitamin D3 Supplement - 1 000 IU - Support Healthy Bones Teeth Muscles Cardiovascular and Immune Function - Gluten-Free Dairy-Free Soy-Free - 90 Capsules
- Price
- $29.97
- Rating
- 4.8/5
- Reviews
- 3,397
- Age
- 3y ago

Ultiboost Vitamin D3 1000Iu Capsule (Support Strong Healthy Bones) 60S
- Price
- $21.62
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 4y ago

Blackmores Sunny D 1000 Gold Capsules 60s
- Price
- $20.00
- Rating
- 3.3/5
- Reviews
- 2
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 53% of clicks. Leaders hold, but buyers still shop past them.
Brands
12 falling
Sellers
26
Est. top-5 brand share
83%
Top 20: 100%
Est. top-5 click share
53%
Top 20: 94%
Open market
12%
- Now Foods49%
- NatureWise12%
- THORNE8%
- Nature's Bounty8%
- Nature Made6%
- Doctor's Best5%
- Open — no brand owns it (6 brands, 12%)
Demand
Vitamin D search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.6× · 11 of 12 months tracked
Reviews and returns
What reviews say buyers love and hate about Vitamin D
We read the reviews and the return reasons for every product selling here.
“Good supplement”
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.
6 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 D 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









