---
title: "Calcium Magnesium — $601K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/calcium-magnesium"
last_updated: "2026-08-06T17:14:09.439Z"
locale: en
meta:
description: "Niche score 57/100 · $601K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · $601K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Calcium Magnesium — $601K/yr Amazon US Niche (2026) - Flapen"
---
# **calcium magnesium**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 64Growth 36Conversion 75Competition 51Returns 100Price range 73Avg price 93Brand share 54Review moat 25Quality gap 23
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$22.31**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****7.0%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$5.32–$41.30**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$601K**
$601K/yr · 387K searches
**Brand share**
**Good****72%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****54%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+9.0%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****4,587.74**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, calcium magnesium is a $601K/yr Amazon United States market (387K searches/yr). The top 5 brands hold 72% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **calcium magnesium market data**
- **Units sold / yr**
- **30K–40K**
- avg 750–1,000/product
- **Revenue / yr**
- **$669K–$892K**
- units × avg price
- **Conversion rate**
- **7.0%**
- **Avg BSR**
- **#397**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **78%**
- **Out of stock**
- **1.3%**
- **Avg brand age**
- **80 months**
- **Avg seller age**
- **155 days**
## **Competition & brand share**
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▼falling
**Sellers**
**591**
**Top-5 brand share**
**72%**
Top 20: 100%
**Top-5 click share**
**54%**
Top 20: 93%
**Open market**
**21%**
- NOW Foods25% - Nature Made16% - Country Life14% - Nature's Bounty11% - SOLARAY7% - Pure Encapsulations6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +9.0% search growth over the last 90 days.
9K7KPrime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.1×
[**Open Trend **](https://flapen.com/research/us/health-household/calcium-magnesium/trend)
## **Top calcium magnesium search terms**
- **calcium magnesium**109K/yr+4.7%8.0% conv. - **calcium and magnesium supplement**41K/yr+2.7%7.2% conv. - **calcium magnesium supplement**54K/yr-21.5%6.4% conv. - **magnesium calcium**32K/yr+2.5%6.5% conv. - **calcium and magnesium**20K/yr+21.7%4.3% conv. - **magnesium and calcium supplement**19K/yr+7.3%5.3% conv. - **calcium magnesium d3**15K/yr+28.2%3.5% conv. - **calcium with magnesium**14K/yr+24.3%4.5% conv. - **cal mag supplement**13K/yr+21.6%5.1% conv. - **magnesium calcium supplement**10K/yr-1.2%3.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/calcium-magnesium/search-terms)
## **Top calcium magnesium 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%$30K10%$60K15%$90K20%$120K1001K10K100K 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**NOW Foods Supplements Calcium & Magnesium 2:1 Ratio High Potency Supports Bone Health* 250 Tablets**NOW Foods**$17.82**4.6★6,212 rev](https://www.amazon.com/dp/B00028LZ9A) [2**Nature Made Calcium Magnesium Zinc with Vitamin D3 Dietary Calcium Supplement for Bone Support 300 Tablets**Nature Made**$11.08**4.8★20,058 rev](https://www.amazon.com/dp/B000OD1F7U) [3**Natures Bounty Calcium Magnesium & Zinc Caplets Immune & Bone Health Daily Supplement 1000mg Calcium 400mg Magnesium 600 IU Vitamin D Gluten Free 100 Caplets**Nature's Bounty**$5.32**4.7★23,123 rev](https://www.amazon.com/dp/B002BXAMJS) [4**NOW Foods Supplements Calcium & Magnesium with Vitamin D-3 and Zinc Supports Bone Health* 120 Softgels**NOW Foods**$10.54**4.6★3,002 rev](https://www.amazon.com/dp/B000F00D20) [5**Pure Encapsulations Calcium Magnesium (Citrate) - 240 g Calcium & 240 g Magnesium - Bone Health Support* - Non-GMO & Vegan - 180 Capsules**Pure Encapsulations**$32.82**4.7★1,101 rev](https://www.amazon.com/dp/B000H83T8A)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost Calcium Magnesium & Zinc Tablets 1 415 mg 180 Tablets - Vitamin/Mineral Blend Supplement 60 Servings - Gluten Free Non-GMO**Nutricost**$13.87**568 rev3y ago](https://www.amazon.com/dp/B0CCZR81HQ) [**Qunol Calcium 3 in 1 Tablets with Calcium Magnesium & Zinc for Immune Support Bone Nerve and Muscle Health Supplement 270 Count**Qunol**$18.15**3,224 rev3y ago](https://www.amazon.com/dp/B0CCK411P5) [**Nutricost Calcium & Magnesium Carbonate 240 Tablets 60 Servings GMO-Free**Nutricost**$14.81**297 rev5y ago](https://www.amazon.com/dp/B0989HPNQF) [**SOLARAY Calcium Magnesium Zinc Supplement - with Calcium 1000mg Magnesium 500mg - Bone Health Muscle Function Heart Health and Immune Support - Vegan 60 Day Guarantee 68 Servings 275 VegCaps**SOLARAY**$23.60**5,860 rev7y ago](https://www.amazon.com/dp/B07T3PGKQP) [**THORNE - Calcium-Magnesium Malate - Optimally Absorbed Magnesium & Calcium Mineral Supplement - Supports Bone Muscle Lung & Heart Health* - Third-Party Certified - Dairy & Gluten-Free - 240 Capsules**THORNE**$41.30**878 rev8y ago](https://www.amazon.com/dp/B079MK3W4L)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**MegaFood Calcium and Magnesium - Essential Mineral Supplement That Helps Maintain Bone and Muscle Health - For Men and Women - Vegan - Made Without 9 Food Allergens - 90 Tabs (30 Servings)**MegaFood**$32.52**4.5★**▲ 52%**](https://www.amazon.com/dp/B000F4WOAU) [**Country Life Target-Mins Calcium Magnesium Complex 1000mg/500mg 90 Tablets Certified Gluten Free Certified Vegan Certified Non-GMO Verified**Country Life**$16.94**4.6★**▲ 45%**](https://www.amazon.com/dp/B00020IJYW) [**SOLARAY Calcium Magnesium Zinc Supplement - with Calcium 1000mg Magnesium 500mg - Bone Health Muscle Function Heart Health and Immune Support - Vegan 60 Day Guarantee 68 Servings 275 VegCaps**SOLARAY**$23.60**4.7★**▲ 28%**](https://www.amazon.com/dp/B07T3PGKQP) [**Country Life Target-Mins Calcium Magnesium with Vitamin D-Complex 1000mg/500mg/10mcg 360 Vegan Capsules Certified Gluten Free Certified Vegan Verified Non-GMO Verified**Country Life**$34.92**4.7★**▲ 28%**](https://www.amazon.com/dp/B001I3CDWQ) [**Country Life Target-Mins Calcium Magnesium with Vitamin D-Complex 1000mg/500mg/10mcg 240 Vegan Capsules Certified Gluten Free Certified Vegan**Country Life**$25.89**4.7★**▲ 24%**](https://www.amazon.com/dp/B00117ZTNY)
**~~View all trending →~~**
## **What buyers say about calcium magnesium**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**22%
*“Great product will reorder”*
**Vitamin**13%
*“Good source of vitamins”*
**Value For Money**9%
*“Good deal”*
**Calcium**9%
*“A Good Calcium”*
**Ease Of Chewing/Swallowing**5%
*“This is the best for me because easy swallowing”*
**Advertised Vs Actual Product**4%
*“As advertised”*
**Ease Of Use**2%
*“Easy to use and taste ok”*
**Sleep Quality**2%
*“SLEEP is fantastic”*
**Joint Pain**2%
*“Very good for fibromyalgia and osteoporosis”*
**Efficiency**2%
*“Seems like it help”*
### **What buyers complain about **
**Size-Overall**14%
*“The tablets are a bit large”*
**Ease Of Chewing/Swallowing**11%
*“Impossible to swallow”*
**Dosage**7%
*“Content of each is very low per dosage compared to other brands at the same cost”*
**Calcium**6%
*“1,000 mg calcium in 2 mL is extremely concentrated”*
**Magnesium**5%
*“Worst 2 forms of magnesium”*
**Quality-Overall**5%
*“Very bad batch here”*
**Value For Money**4%
*“Overpriced”*
**Vitamin**3%
*“I cant take theses huge vitamins”*
**Taste-Overall**3%
*“They don't taste great”*
**Functionality-Overall**2%
*“Product does not work”*
### **Top return reasons **
**Calcium**23%
**Magnesium**15%
**Value For Money**15%
**Material Quality**8%
**Regulates Digestion**8%
**Vitamin**8%
**Ingredients-Overall**8%
**Dosage**8%
**Advertised Vs Actual Product**8%
## **Common questions**
- **Is calcium magnesium profitable to sell on Amazon United States?**
- The niche generates $601K/yr across 27 tracked products. 90-day search growth is +9.0%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the calcium magnesium niche?**
- 15 brands and 591 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 72% of demand.
- **What do buyers complain about in calcium magnesium?**
- Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Dosage. The return rate is 0.0%.
- **When does demand for calcium magnesium peak?**
- Demand is steady year-round — the busiest month runs 1.1× the quietest.
- **What does it cost to enter the calcium magnesium niche?**
- Listings span $5.32–$41.30; the average listing price is $22.31 (sweet spot $15–$100). The average incumbent carries 4,588 reviews — the moat a new listing must climb.
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