---
title: "D3 125 Mcg — $446K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/d3-125-mcg"
last_updated: "2026-08-11T08:09:36.229Z"
locale: en
meta:
description: "Niche score 41/100 · $446K/yr market · 200K searches/yr · $12.34 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:description": "Niche score 41/100 · $446K/yr market · 200K searches/yr · $12.34 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:title": "D3 125 Mcg — $446K/yr Amazon US Niche (2026) - Flapen"
---
# **d3 125 mcg**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 57Growth 28Conversion 99Competition 10Returns 100Price range 47Avg price 53Brand share 0Review moat 0Quality gap 14
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****18.1%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$446K**
$446K/yr · 200K searches
**Avg price**
**Good****$12.34**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$7.59–$21.45**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+2.4%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.8★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****88%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Review moat**
**Bad****71,257.56**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, d3 125 mcg is a $446K/yr Amazon United States market (200K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 41/100.
Data updated Aug 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **d3 125 mcg market data**
- **Units sold / yr**
- **40K–50K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$494K–$617K**
- units × avg price
- **Conversion rate**
- **18.1%**
- **Avg BSR**
- **#88**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **78%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **96 months**
- **Avg seller age**
- **142 days**
## **Competition & brand share**
The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▲rising
**Sellers**
**117**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**88%**
Top 20: 100%
**Open market**
**0%**
- Nature's Bounty90% - NatureWise4% - Bronson3% - Nature Made3% - Open — no brand owns it (0%)
## **Demand**
Weekly Amazon search volume, last 18 weeks — +2.4% search growth over the last 90 days.
4K3KApr '26Apr '26May '26Jun '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/health-household/d3-125-mcg/trend)
## **Top d3 125 mcg search terms**
- **natures bounty d3**61K/yr+5.9%18.9% conv. - **vitamin d3 125 mcg**13K/yr-0.3%13.9% conv. - **d3 125 mcg**9K/yr+40.5%10.6% conv. - **nature bounty d3**13K/yr-0.7%12.6% conv. - **natures bounty d3 5000 iu**11K/yr+5.0%25.6% conv. - **natures bounty vitamin d3**15K/yr-23.8%15.6% conv. - **natures bounty vitamin d**12K/yr+10.4%13.4% conv. - **nature bounty vitamin d**6K/yr+85.7%3.2% conv. - **d3 natures bounty**8K/yr+1.5%20.6% conv. - **vitamin d3 natures bounty**8K/yr+10.0%16.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/d3-125-mcg/search-terms)
## **Top d3 125 mcg 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%15%$67K30%$134K45%$201K60%$267K1K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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) [2**Natures Bounty Vitamin D3 2000 IU**Nature's Bounty**$10.85**4.8★76,335 rev](https://www.amazon.com/dp/B00DYSUQEA) [3**Natures Bounty Vitamin D3 1000 IU Softgels 350 Count**Nature's Bounty**$11.73**4.7★49,860 rev](https://www.amazon.com/dp/B004JO99TG) [4**Natures Bounty Vitamin D3 5000 IU Softgels Rapid Release 150 Count**Nature's Bounty**$8.21**4.8★83,838 rev](https://www.amazon.com/dp/B002Y27LLS) [5**NatureWise Vitamin D3 5000IU Supplement Immune Support 360 Mini Softgels**NatureWise**$13.60**4.7★195,696 rev](https://www.amazon.com/dp/B00GB85JR4)
**~~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) [**Natures Bounty Immune Health Vitamin D3 5000 iu Rapid Release 400 Softgels**Nature's Bounty**$21.45**4,837 rev9y ago](https://www.amazon.com/dp/B0713RJDV5) [**NatureWise Vitamin D3 5000IU Supplement Immune Support 360 Mini Softgels**NatureWise**$13.60**195,696 rev12y ago](https://www.amazon.com/dp/B00GB85JR4) [**Natures Bounty Vitamin D3 2000 IU**Nature's Bounty**$10.85**76,335 rev12y ago](https://www.amazon.com/dp/B00DYSUQEA) [**Natures Bounty Vitamin D3 5000 IU Softgels 240 Count**Nature's Bounty**$14.74**83,838 rev13y ago](https://www.amazon.com/dp/B00DN4VCA2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Natures Bounty Vitamin D3 5000 IU Softgels 240 Count**Nature's Bounty**$14.74**4.8★**▲ 24%**](https://www.amazon.com/dp/B00DN4VCA2) [**Nature Made Vitamin D3 5000 IU (125 mcg) 180 Vitamin D Softgels**Nature Made**$13.36**4.8★**— 3%**](https://www.amazon.com/dp/B008GC9T6A) [**Bronson Vitamin D3 5000iu (125mcg) Non-GMO Gluten-Free Soy-Free 360 Tablets**Bronson**$9.54**4.8★**— 2%**](https://www.amazon.com/dp/B0BXLTXFTS) [**Natures Bounty Vitamin D Supports Immune Health & Bone Health 150 Count**Nature's Bounty**$7.59**4.8★**— 5%**](https://www.amazon.com/dp/B00159JNIU) [**Natures Bounty Vitamin D3 2000 IU**Nature's Bounty**$10.85**4.8★**— 7%**](https://www.amazon.com/dp/B00DYSUQEA)
**~~View all trending →~~**
## **What buyers say about d3 125 mcg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Vitamin**26%
*“Great Vitamin D3”*
**Quality-Overall**15%
*“the quality has been consistent with every purchase”*
**Value For Money**15%
*“Fair price”*
**Advertised Vs Actual Product**9%
*“As advertised”*
**Ease Of Chewing/Swallowing**7%
*“Ease swallow”*
**Efficiency**4%
*“Effective”*
**Dosage**3%
*“My Dr approves of this dosage and its effectiveness”*
**Nutritional Content**2%
*“Good Supplement”*
**Ease Of Use**2%
*“Convenient”*
**Immunity Booster**1%
*“Immune system support”*
### **What buyers complain about **
**Size-Overall**10%
*“These are small”*
**Vitamin**9%
*“I was deficient in vitamin d”*
**Dosage**7%
*“Too high of a dose for me”*
**Functionality-Overall**4%
*“Doesnt work”*
**Stuck/Fused Together**3%
*“the pills were all clumped together”*
**Side Effects**3%
*“upon using them for a few days I got sick on my stomach”*
**Smell**3%
*“something doesnt smell right”*
**Taste-Overall**3%
*“Has no taste, and is small and easy to digest”*
**Allergies**3%
*“Changing the ingredients to allergy prone foods is a BAD idea”*
**Acid Regulator/Stomach Ache Relief**2%
*“So, I took one of these small pills and within 15 minutes I felt extremely light headed and also had stomach pain”*
### **Top return reasons **
**Vitamin**18%
**Dosage**14%
**Value For Money**14%
**Ingredients-Overall**9%
**Adhesion/Stickiness**9%
**Quality-Overall**9%
**Smell**9%
**Functionality-Overall**9%
**Strength**5%
**Ease Of Chewing/Swallowing**5%
## **Common questions**
- **Is d3 125 mcg profitable to sell on Amazon United States?**
- The niche generates $446K/yr across 9 tracked products. 90-day search growth is +2.4%. Flapen's verdict: Skip it (41/100).
- **How competitive is the d3 125 mcg niche?**
- 4 brands and 117 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in d3 125 mcg?**
- Top complaints mined from reviews: Size-Overall, Vitamin, Dosage. The return rate is 0.0%.
- **What does it cost to enter the d3 125 mcg niche?**
- Listings span $7.59–$21.45; the average listing price is $12.34 (sweet spot $15–$100). The average incumbent carries 71,258 reviews — the moat a new listing must climb.
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