---
title: "Calcifediol — $34K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/calcifediol"
last_updated: "2026-08-10T12:07:18.272Z"
locale: en
meta:
description: "Niche score 34/100 · $34K/yr market · 31K searches/yr · $22.64 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:description": "Niche score 34/100 · $34K/yr market · 31K searches/yr · $22.64 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:title": "Calcifediol — $34K/yr Amazon US Niche (2026) - Flapen"
---
# **calcifediol**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 8Growth 19Conversion 57Competition 0Returns 100Price range 81Avg price 94Brand share 0Review moat 50Quality gap 32
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$22.64**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.80–$39.23**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****4.8%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,487.6**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-11.1%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$34K**
$34K/yr · 31K searches
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, calcifediol is a $34K/yr Amazon United States market (31K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 34/100.
Data updated Aug 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **calcifediol market data**
- **Units sold / yr**
- **2K–2K**
- avg 250–500/product
- **Revenue / yr**
- **$34K–$45K**
- units × avg price
- **Conversion rate**
- **4.8%**
- **Avg BSR**
- **#574**
- **Page quality**
- **0%**
- **Prime**
- **80%**
- **Sponsored**
- **80%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **85 months**
- **Avg seller age**
- **154 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**8**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- Immunotec59% - VitamoreD28% - Nike5% - Vitamatic5% - Calciven3%
## **Demand & seasonality**
Weekly Amazon search volume, last 74 weeks — -11.1% search growth over the last 90 days.
1K600Spike '25Black Friday '25Spike '26 seasonMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul
No pronounced peak months · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/health-household/calcifediol/trend)
## **Top calcifediol search terms**
- **calcifediol**14K/yr-16.8%5.3% conv. - **sunray**6K/yr-11.6%2.1% conv. - **calciferol**3K/yr+44.4%0.5% conv. - **vitamin d injection**3K/yr-11.0%0.2% conv. - **calcifediol vitamin d3**3K/yr-21.5%3.1% conv. - **sunray vitamin d**2K/yr-26.0%20.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/calcifediol/search-terms)
## **Top calcifediol 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%$5K30%$10K45%$15K60%$20K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 5 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Sunray Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune Mood Bone & Muscle Support | 4 Capsules**Immunotec**$30.70**4.5★286 rev](https://www.amazon.com/dp/B0DG9C97JV) [2**VitamoreD Vitamin D Calcifediol 10 mcg | Easy Swallow Tablets | Two-A-Day | 30 Day Supply | 60 Tablets**VitamoreD**$15.93**4.7★55 rev](https://www.amazon.com/dp/B0F8P2G2S8) [3**Nike Sunray Adjust 4 Boys (GS/PS) Shoes Hydrangeas/Comet Blue/Pink 386520-504 (7 M US)**Nike**$17.55**4.4★18 rev](https://www.amazon.com/dp/B01HFFPO5I) [4**Vitamatic Vitamin D3 50 000 IU Once Weekly 60 Veg Capsules Made in USA**Vitamatic**$9.80**4.8★5,122 rev](https://www.amazon.com/dp/B08CH2GHKG) [5**Calciven Natural Bone Support Supplement Vegetarian Gluten-Free**Calciven**$39.23**4.4★1,957 rev](https://www.amazon.com/dp/B08Y7DFQYC)
### **Newest**
by launch date
[**Sunray Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune Mood Bone & Muscle Support | 4 Capsules**Immunotec**$30.70**286 rev1y ago](https://www.amazon.com/dp/B0DG9C97JV) [**VitamoreD Vitamin D Calcifediol 10 mcg | Easy Swallow Tablets | Two-A-Day | 30 Day Supply | 60 Tablets**VitamoreD**$15.93**55 rev1y ago](https://www.amazon.com/dp/B0F8P2G2S8) [**Calciven Natural Bone Support Supplement Vegetarian Gluten-Free**Calciven**$39.23**1,957 rev5y ago](https://www.amazon.com/dp/B08Y7DFQYC) [**Vitamatic Vitamin D3 50 000 IU Once Weekly 60 Veg Capsules Made in USA**Vitamatic**$9.80**5,122 rev6y ago](https://www.amazon.com/dp/B08CH2GHKG) [**Nike Sunray Adjust 4 Boys (GS/PS) Shoes Hydrangeas/Comet Blue/Pink 386520-504 (7 M US)**Nike**$17.55**18 rev9y ago](https://www.amazon.com/dp/B01HFFPO5I)
### **Trending**
90-day click momentum
[**Nike Sunray Adjust 4 Boys (GS/PS) Shoes Hydrangeas/Comet Blue/Pink 386520-504 (7 M US)**Nike**$17.55**4.4★**▲ 302%**](https://www.amazon.com/dp/B01HFFPO5I) [**Calciven Natural Bone Support Supplement Vegetarian Gluten-Free**Calciven**$39.23**4.4★**▲ 78%**](https://www.amazon.com/dp/B08Y7DFQYC) [**Vitamatic Vitamin D3 50 000 IU Once Weekly 60 Veg Capsules Made in USA**Vitamatic**$9.80**4.8★**▲ 12%**](https://www.amazon.com/dp/B08CH2GHKG) [**VitamoreD Vitamin D Calcifediol 10 mcg | Easy Swallow Tablets | Two-A-Day | 30 Day Supply | 60 Tablets**VitamoreD**$15.93**4.7★**— 4%**](https://www.amazon.com/dp/B0F8P2G2S8) [**Sunray Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune Mood Bone & Muscle Support | 4 Capsules**Immunotec**$30.70**4.5★**— 7%**](https://www.amazon.com/dp/B0DG9C97JV)
## **What buyers say about calcifediol**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**16%
*“seems to be a good company”*
**Vitamin**16%
*“Great Vitamin”*
**Calcium**8%
*“Best Calcium”*
**Value For Money**7%
*“Very affordable”*
**Efficiency**6%
*“Effective”*
**Joint Pain**5%
*“Most effective for bone support”*
**Ease Of Chewing/Swallowing**5%
*“Very easy to use. swallow”*
**Advertised Vs Actual Product**4%
*“have used previously and just advertised”*
**Ease Of Use**4%
*“Easy and helpful”*
**Dosage**4%
*“The once-weekly dose is super convenient”*
### **What buyers complain about **
**Calcium**14%
*“Not enough calcium for me”*
**Vitamin**13%
*“My vitamin D was low”*
**Value For Money**9%
*“It's expensive”*
**Dosage**5%
*“You need to take the proper doses for how bad you are”*
**Size-Overall**4%
*“THE pills are VERY big --”*
**Muscle Pain Relief**3%
*“my back hurts more than it used to”*
**Advertised Vs Actual Product**3%
*“This product description is quite confused”*
**Functionality-Overall**2%
*“Did not work”*
**Acid Regulator/Stomach Ache Relief**2%
*“it made my stomach lining burn after first use”*
**Allergies**2%
*“Could be allergic to something in it or was told pill coating could be dissolving to fast”*
### **Top return reasons **
**Calcium**50%
**Advertised Vs Actual Product**50%
## **Common questions**
- **Is calcifediol profitable to sell on Amazon United States?**
- The niche generates $34K/yr across 5 tracked products. 90-day search growth is -11.1%. Flapen's verdict: Skip it (34/100).
- **How competitive is the calcifediol niche?**
- 5 brands and 8 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in calcifediol?**
- Top complaints mined from reviews: Calcium, Vitamin, Value For Money. The return rate is 0.0%.
- **When does demand for calcifediol peak?**
- Demand is steady year-round — the busiest month runs 1.8× the quietest.
- **What does it cost to enter the calcifediol niche?**
- Listings span $9.80–$39.23; the average listing price is $22.64 (sweet spot $15–$100). The average incumbent carries 1,488 reviews — the moat a new listing must climb.
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