---
title: "Vitamin D — $27.0M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/vitamin-d"
last_updated: "2026-08-10T04:04:25.874Z"
locale: en
meta:
description: "Niche score 55/100 · $27.0M/yr market · 90.6M searches/yr. A deep review moat (56,010 avg reviews) keeps it on the watch list. Data updated Aug 2026."
"og:description": "Niche score 55/100 · $27.0M/yr market · 90.6M searches/yr. A deep review moat (56,010 avg reviews) keeps it on the watch list. Data updated Aug 2026."
"og:title": "Vitamin D — $27.0M/yr Amazon US Niche (2026) - Flapen"
---
# **vitamin d**
**Worth a look**
Shows a $27.0M/yr market, but a deep review moat (56,010 avg reviews) keeps it on the watch list.
Market size 100Growth 44Conversion 28Competition 59Returns 100Price range 69Avg price 61Brand share 39Review moat 0Quality gap 15
**Market size**
**Incredible****$27.0M**
$27.0M/yr · 90.6M searches
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$6.34–$34.70**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Good****$13.32**
avg listing price — sweet spot $15–$100
**Competition**
**Good****50%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+15.2%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****2.2%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Bad****4.8★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****56,010.38**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, vitamin d is a $27.0M/yr Amazon United States market (90.6M searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Jan–Dec. Verdict: Worth a look — 55/100.
Data updated Aug 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **vitamin d market data**
- **Units sold / yr**
- **1.0M–1.0M**
- avg 80,000–100,000/product
- **Revenue / yr**
- **$13.3M–$13.3M**
- units × avg price
- **Conversion rate**
- **2.2%**
- **Avg BSR**
- **#45**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **90%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **68 months**
- **Avg seller age**
- **149 days**
## **Competition & brand share**
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**193**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**50%**
Top 20: 90%
**Open market**
**14%**
- Nature Made38% - NatureWise22% - Nature's Bounty10% - Bronson6% - NOW Foods5% - Nutricost4% - Open — no brand owns it (6 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +15.2% search growth over the last 90 days.
2.3M1.8MHoliday '24Prime Day '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Dec · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/us/health-household/vitamin-d/trend)
## **Top vitamin d search terms**
- **vitamin d**8.6M/yr-12.1%10.7% conv. - **vitamin d3**3.6M/yr-2.5%12.3% conv. - **vitamin d3 5000 iu**1.0M/yr-5.5%14.8% conv. - **d3 vitamin**492K/yr-2.3%16.7% conv. - **vitamina d**288K/yr+1.5%3.0% conv. - **vitamina d3**174K/yr+10.5%3.4% conv. - **vit d**175K/yr-2.8%9.2% conv. - **vit d3**141K/yr-0.0%12.2% conv. - **vitamin d supplements**131K/yr+20.8%2.8% conv. - **vitamina d3 para mujer**100K/yr-1.3%2.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/vitamin-d/search-terms)
## **Top vitamin d 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%5%$1.4M10%$2.7M15%$4.1M20%$5.4M1K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NatureWise Vitamin D3 5000IU Supplement Immune Support 360 Mini Softgels**NatureWise**$13.60**4.7★195,696 rev](https://www.amazon.com/dp/B00GB85JR4) [2**Nature Made Vitamin D3 1000 IU (25 mcg) 300 Vitamin D Softgels**Nature Made**$10.79**4.8★60,500 rev](https://www.amazon.com/dp/B004U3Y8OM) [3**Nature Made Vitamin D3 1000 IU (25 mcg) 180 Vitamin D Softgels**Nature Made**$8.67**4.8★60,500 rev](https://www.amazon.com/dp/B004U3Y8SI) [4**Natures Bounty Vitamin D3 5000 IU Softgels 240 Count**Nature's Bounty**$14.74**4.8★83,838 rev](https://www.amazon.com/dp/B00DN4VCA2) [5**Sports Research Vegan Vitamin D3 + K2 w/Coconut Oil 60 Count Plantgels**Sports Research**$22.12**4.8★54,253 rev](https://www.amazon.com/dp/B07255MPRN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Bronson Vitamin D3 5000iu (125mcg) Non-GMO Gluten-Free Soy-Free 360 Tablets**Bronson**$9.54**2,941 rev3y ago](https://www.amazon.com/dp/B0BXLTXFTS) [**Bronson Vitamin D3 10 000 IU (250 mcg) Immune & Muscle Support 360 Tablets**Bronson**$9.53**11,056 rev3y ago](https://www.amazon.com/dp/B0B13B147F) [**Nature Made Vitamin D3 K2 Supplement 30 Softgels**Nature Made**$12.53**10,717 rev4y ago](https://www.amazon.com/dp/B09SR2KX9D) [**NatureWise Vitamin D3 5000IU Supplement Bone & Immune Health 30 Softgels**NatureWise**$6.34**195,696 rev5y ago](https://www.amazon.com/dp/B093N7JJYL) [**Nature Made Vitamin D3 5000 IU (125 mcg) 360 Vitamin D Softgels**Nature Made**$26.47**67,638 rev6y ago](https://www.amazon.com/dp/B0828JGTXB)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nature Made Vitamin D3 1000 IU (25 mcg) 180 Vitamin D Softgels**Nature Made**$8.67**4.8★**▲ 82%**](https://www.amazon.com/dp/B004U3Y8SI) [**Metagenics Vitamin D3 and Vitamin K2 10 000 IU with MK-7- Vitamin D3 with K2 for Immune Support Bone & Heart Health-Non-GMO Gluten-Free-60 Softgels**Metagenics**$30.10**4.7★**▲ 79%**](https://www.amazon.com/dp/B00ECH40MQ) [**Bronson Vitamin D3 5000iu (125mcg) Non-GMO Gluten-Free Soy-Free 360 Tablets**Bronson**$9.54**4.8★**▲ 73%**](https://www.amazon.com/dp/B0BXLTXFTS) [**Nature Made Vitamin D3 K2 Supplement 30 Softgels**Nature Made**$12.53**4.7★**▲ 60%**](https://www.amazon.com/dp/B09SR2KX9D) [**Sports Research Vegan Vitamin D3 + K2 w/Coconut Oil 60 Count Plantgels**Sports Research**$22.12**4.8★**▲ 45%**](https://www.amazon.com/dp/B07255MPRN)
**~~View all trending →~~**
## **What buyers say about vitamin d**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Vitamin**23%
*“Quality vitamin”*
**Quality-Overall**19%
*“the quality feels consistent”*
**Value For Money**11%
*“Very affordable”*
**Ease Of Chewing/Swallowing**7%
*“Easy to chew”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Taste-Overall**3%
*“No weird aftertaste or anything”*
**Ease Of Use**3%
*“Ease of use”*
**Efficiency**3%
*“Works well”*
**Nutritional Content**2%
*“Effective Supplement”*
**Dosage**2%
*“The dosage is convenient for daily use”*
### **What buyers complain about **
**Vitamin**12%
*“BAD TASTING VITAMINGUMMIES”*
**Dosage**7%
*“Too high of a dose for me”*
**Size-Overall**6%
*“These are small”*
**Value For Money**5%
*“Not worth the price”*
**Taste-Overall**4%
*“Horrible after taste”*
**Advertised Vs Actual Product**3%
*“Very misleading”*
**Side Effects**3%
*“Makes you sick”*
**Ingredients-Overall**3%
*“Gross ingredients”*
**Functionality-Overall**3%
*“Cant provide results yet”*
**Allergies**2%
*“Can cause allergic reaction”*
### **Top return reasons **
**Value For Money**28%
**Dosage**16%
**Vitamin**11%
**Ingredients-Overall**6%
**Functionality-Overall**6%
**Adhesion/Stickiness**4%
**Quality-Overall**4%
**Smell**4%
**Vegan/Organic**3%
**Ease Of Use**3%
## **Common questions**
- **Is vitamin d profitable to sell on Amazon United States?**
- The niche generates $27.0M/yr across 29 tracked products. 90-day search growth is +15.2%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the vitamin d niche?**
- 12 brands and 193 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in vitamin d?**
- Top complaints mined from reviews: Vitamin, Dosage, Size-Overall. The return rate is 0.0%.
- **When does demand for vitamin d peak?**
- Demand peaks in Jan–Dec; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the vitamin d niche?**
- Listings span $6.34–$34.70; the average listing price is $13.32 (sweet spot $15–$100). The average incumbent carries 56,010 reviews — the moat a new listing must climb.
## **Related niches in Health & Household**
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)