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Vitamin D and Magnesium

Fail

The top 5 products take 74% of clicks, so Vitamin D and Magnesium is a Fail.

Flapen Score
47
47 / 100
Ranks 8,381 of 14,768 Health & Household niches · −2 vs the category median of 49
Market size
$335K/yr286K searches / yr
90-day growth
+5.0%search demand this quarter
Competition
74%top-5 click share · 11 brands · 84 sellers

Flapen Score

Vitamin D and Magnesium against its category

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

47Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Vitamin D and Magnesium market on Amazon at a glance

Shoppers on Amazon United States searched for Vitamin D and Magnesium 286K times last year and spent an estimated $335K. The top 5 brands take 87% of clicks. Flapen scores it 47 out of 100, a Fail.

01 · Demand

An estimated 6.6% of those searches ended in a purchase.

Shoppers searched for this 286K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 6.6% of those searches ended in a purchase. Searches in the last 90 days moved +5.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated $335K a year.

Searches, last 12 months
286K
Growth, 90 days vs prior 90
+5.0%
Conversion, latest week
6.6%
Market size, estimated
$335Ka year
Top search term
magwell48K searches a year

02 · Price

A sale here is worth $17.76.

Listings sell for $17.76 on average, from $8.97 to $42.94. Amazon reports units sold in ranges. This niche sold 25K to 30K a year. The average listing sells 2,500 to 3,000 of them. At $17.76 that is $44K to $53K a year per listing.

Average price
$17.76inside the $15 to $100 sweet spot
Price range
$8.97–$42.94
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
25K–30K
Units per listing a year
2,500–3,000
Revenue per listing a year
$44K–$53K
Returns
0.3%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is ads and reviews.

93% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #223 within Magnesium. It carries 5,102 reviews at 4.65 stars, so a new listing needs social proof before a better product.

Sponsored listings
93%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#223in Magnesium
Average rating
4.65 starsAmazon United States average 4.42 stars
Average reviews
5,102per listing
Listings tracked
15

04 · Newcomers

3 of last year's 3 launches cleared the first-year sales bar.

3 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 55 months on average, so the names here are settling in.

Launched, last 12 months
3
Successful launches
3Amazon's first-year sales bar
Average brand age
55 months

Products

Top Vitamin D and 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 28, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 74% of clicks. A locked shelf that new listings rarely crack.

$0$33K$67K$100K$134K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

11 rising

Sellers

84

Est. top-5 brand share

87%

Top 20: 100%

Est. top-5 click share

74%

Top 20: 100%

Open market

10%

  • Live Conscious37%
  • Nature Made37%
  • Nature's Bounty5%
  • Bronson4%
  • Totaria4%
  • Carlyle3%
  • Open — no brand owns it (5 brands, 10%)

Demand

Vitamin D and Magnesium search demand

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

6K4KSpike '26Prime Day '26JanFebMarAprMayJunJul

Peak months: May, Jun, Jul · busiest ÷ quietest = 4.0× · 7 of 12 months tracked

Search terms

Top Vitamin D and Magnesium search terms shoppers use

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

  • magwell48K/yr
  • nature made magnesium complex34K/yr
  • vitamin d and magnesium22K/yr
  • magnesium vitamin d21K/yr
  • magnesium and vitamin d20K/yr
  • vitamin d magnesium17K/yr
  • magwell magnesium with zinc & d321K/yr
  • magnesium complex nature made12K/yr
  • vitamin d with magnesium14K/yr
  • magnesium with vitamin d11K/yr

Reviews and returns

What reviews say buyers love and hate about Vitamin D and Magnesium

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

16%of positive reviews mention “Quality-Overall”
12%of negative reviews mention “Dosage”
0.3%of orders come back
“Dosage check not good”
A buyer, on “Dosage”12% 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.

20 topics

NegativePositive

FAQ

Common Vitamin D and 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