Is calcium 600 mg with vitamin d3 profitable to sell on Amazon United States?

The niche generates $1.3M/yr across 11 tracked products. 90-day search growth is +13.8%. Flapen's verdict: Worth a look (51/100).

How competitive is the calcium 600 mg with vitamin d3 niche?

6 brands and 96 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 98% of demand.

What do buyers complain about in calcium 600 mg with vitamin d3?

Top complaints mined from reviews: Size-Overall, Taste-Overall, Ease Of Chewing/Swallowing. The return rate is 0.0%.

When does demand for calcium 600 mg with vitamin d3 peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the calcium 600 mg with vitamin d3 niche?

Listings span $6.59–$31.39; the average listing price is $14.92 (sweet spot $15–$100). The average incumbent carries 9,537 reviews — the moat a new listing must climb.

calcium 600 mg with vitamin d3

Worth a look

Shows low returns (0.0%), but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible16.9%

search→purchase rate — share of searches ending in a sale

Market size

Great$1.3M

$1.3M/yr · 517K searches

Avg price

Good$14.92

avg listing price — sweet spot $15–$100

Price range

Good$6.59–$31.39

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Okay+13.8%

90-day search growth — must beat 0% to launch

Review moat

Bad9,537.18

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad83%

top-5 click share — a locked-up shelf

Brand share

Bad98%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, calcium 600 mg with vitamin d3 is a $1.3M/yr Amazon United States market (517K searches/yr). The top 5 brands hold 98% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

calcium 600 mg with vitamin d3 market data

Units sold / yr: 80K–100K; avg 8,000–10,000/product
Revenue / yr: $1.2M–$1.5M; units × avg price
Conversion rate: 16.9%
Avg BSR: #201
Page quality: 0%
Prime: 100%
Sponsored: 45%
Out of stock: 0.0%
Avg brand age: 80 months
Avg seller age: 151 days

Competition & brand share

The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 flat

Sellers

Top-5 brand share

98%

Top 20: 100%

Top-5 click share

83%

Top 20: 100%

Open market

Nature Made57%
Nature's Bounty19%
21st Century12%
Nature's Wonder6%
Pure Encapsulations3%
Generic2%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +13.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top calcium 600 mg with vitamin d3 search terms

calcium 600 mg212K/yr +22.5%14.8% conv.
calcium 600 mg with vitamin d370K/yr +18.4%15.5% conv.
nature made calcium64K/yr +5.7%13.0% conv.
nature made calcium 600 mg with vitamin d335K/yr -3.1%24.9% conv.
calcium 60015K/yr +0.1%11.5% conv.
calcium 600mg15K/yr +10.8%11.6% conv.
calcium 600 mg with vitamin d9K/yr +36.3%14.9% conv.
600 mg calcium13K/yr -2.8%11.9% conv.
nature made calcium citrate12K/yr +5.0%3.1% conv.
calcium nature made11K/yr -1.5%14.4% conv.

All search terms

Top calcium 600 mg with vitamin d3 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 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nature Made Calcium 600 mg with Vitamin D3 Dietary Supplement for Bone Support 220 Tablets

Nature Made$13.714.7★27,324 rev

Natures Bounty Calcium Carbonate & Vitamin D Supports Immune Health & Bone Health 600mg Calcium & 800IU Vitamin D3 250 Tablets

Nature's Bounty$10.744.7★8,402 rev

21st Century Calcium 600 mg Supplement (400 Tablets) Vegan-Friendly Bone Strength Calcium Supplement Non-GMO & Gluten-Free Calcium Carbonate No Artificial Flavors Suitable for Men & Women

21st Century$11.904.7★6,539 rev

Natures Wonder Calcium 600 mg with Vitamin D3 20 mcg for Bone Health 220 Tablets

Nature's Wonder$9.894.7★660 rev

Nature Made Calcium 600 mg with Vitamin D3 Dietary Supplement for Bone Support Calcium Supplement for Bone Health 60 Tablets

Nature Made$6.594.7★27,324 rev

Newest

by launch date

Natures Wonder Calcium 600 mg with Vitamin D3 20 mcg for Bone Health 220 Tablets

Nature's Wonder$9.89660 rev

1y ago

Spring - Valley Calcium 600mg Natural Bone Health Calcium - 100 Tablets Pack of 3

Generic$30.82237 rev

4y ago

21st Century Calcium 600 mg Supplement (400 Tablets) Vegan-Friendly Bone Strength Calcium Supplement Non-GMO & Gluten-Free Calcium Carbonate No Artificial Flavors Suitable for Men & Women

21st Century$11.906,539 rev

12y ago

21st Century Calcium Plus D Supplement Tablet 600 mg 400 Count

21st Century$15.272,838 rev

12y ago

Nature Made Calcium Gummies 500 mg Per Serving with Vitamin D3 Dietary Calcium Supplement for Bone Support 80 Gummies 40 Day Supply

Nature Made$9.824,462 rev

13y ago

What buyers say about calcium 600 mg with vitamin d3

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

What buyers love

Calcium18%

“Calcium works well”

Value For Money15%

“Great Deal”

Quality-Overall14%

“always consistent quality”

Vitamin9%

“Great vitamins”

Advertised Vs Actual Product7%

“As advertised”

Ease Of Chewing/Swallowing5%

“The best chewable I've bought in last year”

Taste-Overall4%

“Taste great”

Ease Of Use4%

“Ease of use”

Joint Pain2%

“It is an excellent supplement for bone health”

Efficiency2%

“Effective product”

What buyers complain about

Size-Overall12%

“Too Big”

Taste-Overall8%

“Weird taste”

Ease Of Chewing/Swallowing8%

“as I can't swallow that type”

Sweetness7%

“Way too sugary”

Calcium7%

“Apparently low calcium is a thing”

Value For Money4%

“Too pricey”

Texture/Consistency-Overall4%

“Terrible texture”

Dosage4%

“Content of each is very low per dosage compared to other brands at the same cost”

Vitamin2%

“Vitamins r too big to swallow”

Acid Regulator/Stomach Ache Relief2%

“stomach pains”

Top return reasons

Calcium42%

Vitamin15%

Ease Of Chewing/Swallowing10%

Magnesium8%

Advertised Vs Actual Product4%

Size-Overall4%

Flavor4%