Is calcium d3 k2 profitable to sell on Amazon United States?

The niche generates $304K/yr across 20 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Worth a look (56/100).

How competitive is the calcium d3 k2 niche?

19 brands and 62 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 60% of demand.

What do buyers complain about in calcium d3 k2?

Top complaints mined from reviews: Taste-Overall, Smell, Calcium. The return rate is 0.0%.

When does demand for calcium d3 k2 peak?

Demand peaks in May–Jun; the busiest month runs 2.6× the quietest.

What does it cost to enter the calcium d3 k2 niche?

Listings span $10.31–$38.79; the average listing price is $23.58 (sweet spot $15–$100). The average incumbent carries 2,131 reviews — the moat a new listing must climb.

calcium d3 k2

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$23.58

avg listing price — sweet spot $15–$100

Price range

Great$10.31–$38.79

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

Brand share

Good60%

top-5 brand share — brands hold most of the demand

Conversion

Good5.4%

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

Market size

Good$304K

$304K/yr · 238K searches

Competition

Okay56%

top-5 click share — leaders hold, buyers still browse

Review moat

Okay2,131.25

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-1.7%

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

According to Flapen's Amazon United States niche tracking, calcium d3 k2 is a $304K/yr Amazon United States market (238K searches/yr). The top 5 brands hold 60% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 56/100.

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

calcium d3 k2 market data

Units sold / yr: 13K–15K; avg 500–750/product
Revenue / yr: $295K–$354K; units × avg price
Conversion rate: 5.4%
Avg BSR: #243
Page quality: 0%
Prime: 100%
Sponsored: 90%
Out of stock: 0.0%
Avg brand age: 60 months
Avg seller age: 150 days

Competition & brand share

The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 rising

Sellers

Top-5 brand share

60%

Top 20: 100%

Top-5 click share

56%

Top 20: 100%

Open market

35%

PrimeMD35%
TAWODIUM9%
Nature Made6%
Vitamatic6%
Vitalitown5%
Pure Encapsulations5%

Demand & seasonality

Weekly Amazon search volume, last 101 weeks — -1.7% search growth over the last 90 days.

Peak months: May, Jun · busiest ÷ quietest = 2.6×

Open Trend

Top calcium d3 k2 search terms

calcium d3 k231K/yr +4.2%3.1% conv.
calcium d3 k2 b1221K/yr +0.1%6.0% conv.
calcium with d3 and k221K/yr -16.1%4.5% conv.
calcio d3 k2 b129K/yr +24.7%1.7% conv.
calcium with vitamin d3 and k210K/yr +34.1%4.4% conv.
calcium k212K/yr +11.2%2.3% conv.
balancer calcium d3 k2 b1214K/yr -60.2%1.3% conv.
calcium with k211K/yr -25.2%3.7% conv.
calcium k2 d37K/yr +71.2%2.3% conv.
vitamin d3 k2 calcium magnesium9K/yr +3.4%1.0% conv.

All search terms

Top calcium d3 k2 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 20 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

4-in-1 Calcium Supplements for Women & Men - Calcium Citrate with D3 K2 Vitamin 5000 IU - Calcium 600mg with Vitamin D3 K2 - Everyday Vitality Supplement - Vegan-Friendly Gluten-Free (120 Capsules)

PrimeMD$23.824.7★3,929 rev

TAWODIUM Nutriview Calcium D3 + K2 + B12 Softgels 2000mg Suplemento De Calcio Glucosamina + Condroitin Added Strengthen Bones and Teeth Boost Energy Vegen Non-GMO 120 Capsules (1)

TAWODIUM$31.654.5★89 rev

4-in-1 Calcium 1200 mg with Vitamin D3 K2 - Extra Strength Calcium Supplements for Women & Men with D3 K2 Vitamin 5000 IU - Everyday Vitality Supplement - Vegan-Friendly Gluten-Free Non-GMO (120ct)

PrimeMD$26.594.6★716 rev

Nature Made Calcium 300 Tablets 750 MG with D3&K

Nature Made$26.684.7★595 rev

Vitamatic Calcium Supplement 1200mg with D3 K2 & B12 Immune & Bone Health Support - 365 Coated Tablets

Vitamatic$19.604.5★429 rev

Newest

by launch date

GraviGlow Calcio D3 K2 B12 Softgels Calcium 2000mg with d3 & k2 Suplemento de Calcio Strengthen Bones and Teeth Boost Energy Non-GMO 120 Softgels

GraviGlow$32.438 rev

2mo ago

TAWODIUM Nutriview Calcium D3 + K2 + B12 Softgels 2000mg Suplemento De Calcio Glucosamina + Condroitin Added Strengthen Bones and Teeth Boost Energy Vegen Non-GMO 120 Capsules (1)

TAWODIUM$31.6589 rev

4mo ago

Vitalitown Vitamin D3 K2 Calcium 1200 mg Vitamin D3 5000 IU High Potency Bone Strength Teeth & Immune System Support Maximum Absorption Easily Absorbable for Women & Men 60 Tablets

Vitalitown$10.3197 rev

8mo ago

Calcium Supplements for Women - Calcium 1200 mg with Vitamin D3 & K2 - High Absorption Extra Strength Calcium Citrate for Bone Health Strength Density Muscle Heart Support - Slow Release Non-GMO

JINGYAT$19.71293 rev

1y ago

NATURE TARGET Vitamin D3 K2 with Calcium & Magnesium - Max Strength 4 in 1 Formula for Bone Heart & Immune Support - Supplies 5000 IU Vitamin D3 & 120 mcg of Vitamin K2 120 Count

NATURE TARGET$12.12344 rev

1y ago

What buyers say about calcium d3 k2

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

What buyers love

Calcium19%

“Best Calcium”

Quality-Overall16%

“Trusted and reliable product”

Vitamin15%

“Decent vitamin”

Ease Of Chewing/Swallowing8%

“Easily chewed and pleasant flavor”

Advertised Vs Actual Product5%

“Accurate description”

Value For Money5%

“Good value”

Nutritional Content3%

“helps with overall health”

Ease Of Use2%

“easy too use”

Dosage2%

“Good dosage”

Efficiency2%

“Very effective product”

What buyers complain about

Taste-Overall9%

“Chemical taste”

Smell9%

“Odd Smell”

Calcium8%

“Needed a good calcium supplement”

Size-Overall8%

“Tablets too big”

Vitamin6%

“Much needed vitamin”

Dosage6%

“Low dose”

Ease Of Chewing/Swallowing4%

“I do not like swallowing capsules”

Ingredients-Overall3%

“Crazy scary highway levels of these, its ridiculous, if youre taking two of these companies supplements youre likely overdosing massively because of their insanely high levels and overlap across their products”

Side Effects3%

“I had a horrible reaction”

Quality-Overall3%

“I believe that says a lot about the potential quality control of this product”

Top return reasons

Calcium21%

Dosage14%

Magnesium7%

Ingredients-Overall7%

Vitamin7%

Acid Regulator/Stomach Ache Relief7%

Product Condition7%

Size-Overall7%

Smell7%

Joint Pain7%

Common questions

Is calcium d3 k2 profitable to sell on Amazon United States?: The niche generates $304K/yr across 20 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Worth a look (56/100).
How competitive is the calcium d3 k2 niche?: 19 brands and 62 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 60% of demand.
What do buyers complain about in calcium d3 k2?: Top complaints mined from reviews: Taste-Overall, Smell, Calcium. The return rate is 0.0%.
When does demand for calcium d3 k2 peak?: Demand peaks in May–Jun; the busiest month runs 2.6× the quietest.
What does it cost to enter the calcium d3 k2 niche?: Listings span $10.31–$38.79; the average listing price is $23.58 (sweet spot $15–$100). The average incumbent carries 2,131 reviews — the moat a new listing must climb.