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.

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.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible16.8%

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

Okay4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad6,234.77

avg incumbent reviews — the moat a new listing must climb

Competition

Bad78%

top-5 click share — a locked-up shelf

Brand share

Bad96%

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

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

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

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.

Peak months: May, Jun, Jul · busiest ÷ quietest = 4.7×

Open Trend

Top pure calcium search terms

citracal maximum plus d396K/yr +19.0%22.6% conv.
calcium citrate 600mg68K/yr -0.5%5.5% conv.
citracal maximum plus28K/yr +70.4%15.4% conv.
calcium citrate with d37K/yr +21.2%1.8% conv.

All 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.

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

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$11.744.7★10,625 rev

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$13.054.7★4,465 rev

Citracal Petites- Calcium Citrate with Vitamin D3 Bone Health Support Calcium Supplement for Ages 12+ 375 Count (Packaging May Vary)

CITRACAL$14.874.7★8,355 rev

Calcium Citrate 600mg Tablets - Pure Calcium Citrate Supplement 300 Count - Supports Bone Health and Wellness Citrato de Calcio High Absorption Calcium 600 mg

Generic$24.964.7★132 rev

Citra-Cl Maximum Plus Calcium Citrate + Vitamin D3 Supplement Tablets 280 ct. Supports Bone Health & Strength - 4+ Month Supply + Exclusive Vitamin Guide

Generic$37.634.7★12 rev

Newest

by launch date

Citracals Maximum Plus Calcium Citrate + D3 180 Caplets Bone Health Support with Zinc Copper and Manganese

Generic$11.643 rev

2mo ago

Citra-Cl Maximum Plus Calcium Citrate + Vitamin D3 Supplement Tablets 280 ct. Supports Bone Health & Strength - 4+ Month Supply + Exclusive Vitamin Guide

Generic$37.6312 rev

4mo ago

Vitamatic Calcium Citrate with Vitamin D3 240 Tablets High Absorption Calcium Citrate with D3 Non-GMO Gluten-Free

Vitamatic$14.59128 rev

10mo ago

Calcium Citrate 600mg Tablets - Pure Calcium Citrate Supplement 300 Count - Supports Bone Health and Wellness Citrato de Calcio High Absorption Calcium 600 mg

Generic$24.96132 rev

1y ago

Spring Valley Calcium Citrate 600 mg 300 Tablets - Bone & Joint Health + STS Sticker.

STS Home$26.7592 rev

3y ago

What buyers say about pure calcium

What buyers praise and complain about, mined from review topics.

What buyers love

Calcium21%

“Wonderful calcium supplement”

Quality-Overall15%

“Very good product as described”

Value For Money13%

“GOOD VALUE”

Ease Of Chewing/Swallowing10%

“Im not having a problem swallowing it”

Advertised Vs Actual Product8%

“As advertised”

Vitamin7%

“Great value and vitamins”

Ease Of Use3%

“Ease of use”

Dosage2%

“It's great that the dosage is only once a day”

Joint Pain2%

“It is an excellent supplement for bone health”

Acid Regulator/Stomach Ache Relief1%

“No stomach upset”

What buyers complain about

Size-Overall22%

“Very large pills”

Ease Of Chewing/Swallowing15%

“began to have trouble swallowing”

Calcium10%

“Not a fan of these calcium pills”

Dosage7%

“Those supplements are low-dose”

Value For Money3%

“get a. more expensive”

Ease Of Use2%

“Difficult to swallow”

Acid Regulator/Stomach Ache Relief2%

“sour stomach that is quite uncomfortable”

Advertised Vs Actual Product2%

“Wish it was stated in the description”

Hard Feel2%

“Very gritty”

Heart Health1%

“Bad for people with heart problems”

Top return reasons

Calcium43%

Size-Overall15%

Vitamin9%

Dosage6%

Advertised Vs Actual Product3%

Certifications3%

Nutritional Content3%

Add-Ons/Attachments3%

Ease Of Chewing/Swallowing3%