---
title: "Pure Calcium — $640K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/pure-calcium"
last_updated: "2026-08-11T16:44:44.401Z"
locale: en
meta:
description: "Niche score 53/100 · $640K/yr market. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · $640K/yr market. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Pure Calcium — $640K/yr Amazon US Niche (2026) - Flapen"
---
# **pure calcium**
**Worth a look**
Shows low returns (0.0%), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.
Market size 66Growth 48Conversion 98Competition 18Returns 100Price range 85Avg price 85Brand share 9Review moat 24Quality gap 27
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****16.8%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$19.11**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$11.64–$37.63**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$640K**
$640K/yr · 199K searches
**Growth**
**Okay****+18.2%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****6,234.77**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, pure calcium is a $640K/yr Amazon United States market (199K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 53/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **pure calcium market data**
- **Units sold / yr**
- **40K–50K**
- avg 4,000–5,000/product
- **Revenue / yr**
- **$764K–$956K**
- units × avg price
- **Conversion rate**
- **16.8%**
- **Avg BSR**
- **#904**
- **Page quality**
- **0%**
- **Prime**
- **85%**
- **Sponsored**
- **77%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **82 months**
- **Avg seller age**
- **149 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▲rising
**Sellers**
**63**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**2%**
- CITRACAL73% - Generic12% - Pure Encapsulations6% - STS Home3% - Nature Made3% - 21st Century2% - Open — no brand owns it (1 brand, 2%)
## **Demand & seasonality**
Weekly Amazon search volume, last 98 weeks — +18.2% search growth over the last 90 days.
5K3KSpike '24Prime Day '25Spike '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: May, Jun, Jul · busiest ÷ quietest = 4.7×
[**Open Trend **](https://flapen.com/research/us/health-household/pure-calcium/trend)
## **Top pure calcium search terms**
- **citracal maximum plus d3**96K/yr+19.0%22.6% conv. - **calcium citrate 600mg**68K/yr-0.5%5.5% conv. - **citracal maximum plus**28K/yr+70.4%15.4% conv. - **calcium citrate with d3**7K/yr+21.2%1.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/pure-calcium/search-terms)
## **Top pure calcium 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%10%$64K20%$128K30%$192K40%$256K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Citracal Maximum Plus Calcium Supplement - Calcium Citrate with Vitamin D3 Zinc & Essential Minerals for Bone Health Support Ages 12+ 180 Count (Packaging May Vary)**CITRACAL**$11.74**4.7★10,625 rev](https://www.amazon.com/dp/B001LRPUMY) [2**Citracal Maximum Plus Calcium Supplement - Calcium Citrate with Vitamin D3 Zinc & Essential Minerals for Bone Health Support Ages 12+ 120 Count (Packaging May Vary)**CITRACAL**$13.05**4.7★4,465 rev](https://www.amazon.com/dp/B002NUNDK4) [3**Citracal Petites- Calcium Citrate with Vitamin D3 Bone Health Support Calcium Supplement for Ages 12+ 375 Count (Packaging May Vary)**CITRACAL**$14.87**4.7★8,355 rev](https://www.amazon.com/dp/B07RCJY6WD) [4**Calcium Citrate 600mg Tablets - Pure Calcium Citrate Supplement 300 Count - Supports Bone Health and Wellness Citrato de Calcio High Absorption Calcium 600 mg**Generic**$24.96**4.7★132 rev](https://www.amazon.com/dp/B0DMWJTSZP) [5**Citra-Cl Maximum Plus Calcium Citrate + Vitamin D3 Supplement Tablets 280 ct. Supports Bone Health & Strength - 4+ Month Supply + Exclusive Vitamin Guide**Generic**$37.63**4.7★12 rev](https://www.amazon.com/dp/B0GST8BMCB)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Citracals Maximum Plus Calcium Citrate + D3 180 Caplets Bone Health Support with Zinc Copper and Manganese**Generic**$11.64**3 rev2mo ago](https://www.amazon.com/dp/B0GYVVPB8Z) [**Citra-Cl Maximum Plus Calcium Citrate + Vitamin D3 Supplement Tablets 280 ct. Supports Bone Health & Strength - 4+ Month Supply + Exclusive Vitamin Guide**Generic**$37.63**12 rev4mo ago](https://www.amazon.com/dp/B0GST8BMCB) [**Vitamatic Calcium Citrate with Vitamin D3 240 Tablets High Absorption Calcium Citrate with D3 Non-GMO Gluten-Free**Vitamatic**$14.59**128 rev10mo ago](https://www.amazon.com/dp/B0FT42RDRQ) [**Calcium Citrate 600mg Tablets - Pure Calcium Citrate Supplement 300 Count - Supports Bone Health and Wellness Citrato de Calcio High Absorption Calcium 600 mg**Generic**$24.96**132 rev1y ago](https://www.amazon.com/dp/B0DMWJTSZP) [**Spring Valley Calcium Citrate 600 mg 300 Tablets - Bone & Joint Health + STS Sticker.**STS Home**$26.75**92 rev3y ago](https://www.amazon.com/dp/B0BTN6Z5MT)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Citracals Maximum Plus Calcium Citrate + D3 180 Caplets Bone Health Support with Zinc Copper and Manganese**Generic**$11.64**4.0★**▲ 213%**](https://www.amazon.com/dp/B0GYVVPB8Z) [**Citra-Cl Maximum Plus Calcium Citrate + Vitamin D3 Supplement Tablets 280 ct. Supports Bone Health & Strength - 4+ Month Supply + Exclusive Vitamin Guide**Generic**$37.63**4.7★**▲ 201%**](https://www.amazon.com/dp/B0GST8BMCB) [**Vitamatic Calcium Citrate with Vitamin D3 240 Tablets High Absorption Calcium Citrate with D3 Non-GMO Gluten-Free**Vitamatic**$14.59**3.9★**▲ 31%**](https://www.amazon.com/dp/B0FT42RDRQ) [**Citracal Petites- Calcium Citrate with Vitamin D3 Bone Health Support Calcium Supplement for Ages 12+ 375 Count (Packaging May Vary)**CITRACAL**$14.87**4.7★**▲ 22%**](https://www.amazon.com/dp/B07RCJY6WD) [**Citracal Maximum Plus Calcium Supplement - Calcium Citrate with Vitamin D3 Zinc & Essential Minerals for Bone Health Support Ages 12+ 120 Count (Packaging May Vary)**CITRACAL**$13.05**4.7★**▲ 21%**](https://www.amazon.com/dp/B002NUNDK4)
**~~View all trending →~~**
## **What buyers say about pure calcium**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Calcium**21%
*“Wonderful calcium supplement”*
**Quality-Overall**15%
*“Very good product as described”*
**Value For Money**13%
*“GOOD VALUE”*
**Ease Of Chewing/Swallowing**10%
*“Im not having a problem swallowing it”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Vitamin**7%
*“Great value and vitamins”*
**Ease Of Use**3%
*“Ease of use”*
**Dosage**2%
*“It's great that the dosage is only once a day”*
**Joint Pain**2%
*“It is an excellent supplement for bone health”*
**Acid Regulator/Stomach Ache Relief**1%
*“No stomach upset”*
### **What buyers complain about **
**Size-Overall**22%
*“Very large pills”*
**Ease Of Chewing/Swallowing**15%
*“began to have trouble swallowing”*
**Calcium**10%
*“Not a fan of these calcium pills”*
**Dosage**7%
*“Those supplements are low-dose”*
**Value For Money**3%
*“get a. more expensive”*
**Ease Of Use**2%
*“Difficult to swallow”*
**Acid Regulator/Stomach Ache Relief**2%
*“sour stomach that is quite uncomfortable”*
**Advertised Vs Actual Product**2%
*“Wish it was stated in the description”*
**Hard Feel**2%
*“Very gritty”*
**Heart Health**1%
*“Bad for people with heart problems”*
### **Top return reasons **
**Calcium**43%
**Size-Overall**15%
**Vitamin**9%
**Dosage**6%
**Advertised Vs Actual Product**3%
**Certifications**3%
**Nutritional Content**3%
**Add-Ons/Attachments**3%
**Ease Of Chewing/Swallowing**3%
**Value For Money**3%
## **Common questions**
- **Is pure calcium profitable to sell on Amazon United States?**
- The niche generates $640K/yr across 13 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +18.2%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the pure calcium niche?**
- 7 brands and 63 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in pure calcium?**
- Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Calcium. The return rate is 0.0%.
- **When does demand for pure calcium peak?**
- Demand peaks in May–Jun–Jul; the busiest month runs 4.7× the quietest.
- **What does it cost to enter the pure calcium niche?**
- Listings span $11.64–$37.63; the average listing price is $19.11 (sweet spot $15–$100). The average incumbent carries 6,235 reviews — the moat a new listing must climb.
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