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Calcium Magnesium

Maybe

An estimated 0.0% of orders come back. But the products selling today already average 4.6★, so Calcium Magnesium is a Maybe.

Flapen Score
57
57 / 100
Top 18% of 14,768 Health & Household niches · +8 vs the category median of 49
Market size
$601K/yr387K searches / yr
90-day growth
+9.0%search demand this quarter
Competition
54%top-5 click share · 15 brands · 591 sellers

Flapen Score

Calcium Magnesium against its category

The dotted line is the Health & Household average. Past it, Calcium Magnesium is stronger. Inside it, weaker.

57Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Calcium Magnesium market on Amazon at a glance

Shoppers on Amazon United States searched for Calcium Magnesium 387K times last year and spent an estimated $601K. The top 5 brands take 72% of clicks. Flapen scores it 57 out of 100, a Maybe.

01 · Demand

An estimated 7.0% of those searches ended in a purchase.

Shoppers searched for this 387K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 7.0% of those searches ended in a purchase. Searches in the last 90 days moved +9.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated $601K a year.

Searches, last 12 months
387K
Growth, 90 days vs prior 90
+9.0%
Conversion, latest week
7.0%
Market size, estimated
$601Ka year
Peak month
January1.1× the quietest month
Top search term
calcium magnesium109K searches a year

02 · Price

A sale here is worth $22.31.

Listings sell for $22.31 on average, from $5.32 to $41.30. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 750 to 1,000 of them. At $22.31 that is $17K to $22K a year per listing.

Average price
$22.31inside the $15 to $100 sweet spot
Price range
$5.32–$41.30
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
30K–40K
Units per listing a year
750–1,000
Revenue per listing a year
$17K–$22K
Returns
0.0%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

78% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 1.3% of listings are out of stock. The average listing ranks #397 within Calcium. It carries 4,588 reviews at 4.64 stars, so a new listing needs social proof before a better product.

Sponsored listings
78%
Prime listings
100%
Out of stock, average day
1.3%
Average rank
#397in Calcium
Average rating
4.64 starsAmazon United States average 4.42 stars
Average reviews
4,588per listing
Listings tracked
27

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 80 months on average, so the names here are established.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
80 months

Products

Top Calcium Magnesium products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 27, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 54% of clicks. Leaders hold, but buyers still shop past them.

$0$30K$60K$90K$120K1001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

15 falling

Sellers

591

Est. top-5 brand share

72%

Top 20: 100%

Est. top-5 click share

54%

Top 20: 93%

Open market

21%

  • NOW Foods25%
  • Nature Made16%
  • Country Life14%
  • Nature's Bounty11%
  • SOLARAY7%
  • Pure Encapsulations6%

Demand

Calcium Magnesium search demand

Weekly searches over the year, seasonality beneath. Pick a range.

9K7KPrime Day '25Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.1×

Search terms

Top Calcium Magnesium search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • calcium magnesium109K/yr
  • calcium and magnesium supplement41K/yr
  • calcium magnesium supplement54K/yr
  • magnesium calcium32K/yr
  • calcium and magnesium20K/yr
  • magnesium and calcium supplement19K/yr
  • calcium magnesium d315K/yr
  • calcium with magnesium14K/yr
  • cal mag supplement13K/yr
  • magnesium calcium supplement10K/yr

Reviews and returns

What reviews say buyers love and hate about Calcium Magnesium

We read the reviews and the return reasons for every product selling here.

22%of positive reviews mention “Quality-Overall”
14%of negative reviews mention “Size-Overall”
<0.1%of orders come back, a rate Amazon rounds to zero
“The tablets are a bit large”
A buyer, on “Size-Overall”14% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

18 topics

NegativePositive

FAQ

Common Calcium Magnesium questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data