calcium citrate
Launch itA $4.9M/yr market growing +0.1% this quarter with returns at 0.0% — clears our launch bar.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Market size
Incredible$4.9M$4.9M/yr · 2.2M searches
Conversion
Great11.9%search→purchase rate — share of searches ending in a sale
Avg price
Great$18.86avg listing price — sweet spot $15–$100
Price range
Great$7.37–$41.82cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good48%top-5 click share — leaders hold, buyers still browse
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Growth
Okay+0.1%90-day search growth — must beat 0% to launch
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad6,032.87avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, calcium citrate is a $4.9M/yr Amazon United States market (2.2M searches/yr). The top 5 brands hold 76% of demand. Verdict: Launch it — 64/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
calcium citrate market data
- Units sold / yr
- 250K–300K
- avg 8,000–10,000/product
- Revenue / yr
- $4.7M–$5.7M
- units × avg price
- Conversion rate
- 11.9%
- Avg BSR
- #300
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 77%
- Out of stock
- 0.0%
- Avg brand age
- 80 months
- Avg seller age
- 147 days
Competition & brand share
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.Brands
23 rising
Sellers
149
Top-5 brand share
76%
Top 20: 98%
Top-5 click share
48%
Top 20: 83%
Open market
22%
- CITRACAL39%
- Pure Encapsulations19%
- SOLARAY8%
- 21st Century7%
- NOW Foods3%
- NatureWise3%
Demand & seasonality
Weekly Amazon search volume, last 103 weeks — +0.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.7×
Top calcium citrate search terms
- calcium citrate946K/yr
- calcium citrate with vitamin d3305K/yr
- citracal144K/yr
- citracal slow release 1200 plus d3179K/yr
- citracal maximum plus d396K/yr
- calcium citrate 500mg74K/yr
- calcium citrate 1200 mg77K/yr
- calcium citrate 600mg68K/yr
- calcium citrate supplements34K/yr
- citracal maximum plus28K/yr
Top calcium citrate 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.
All 24 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
Pure Encapsulations Calcium (Citrate) - Supplement for Bone Teeth Colon and Cardiovascular Health Support* - with Premium Calcium Citrate - 180 Capsules
Pure Encapsulations$31.394.7★5,961 rev
Citracal Slow Release- Calcium 1200 mg with Vitamin D3 Magnesium Calcium Supplement Bone Health Support Take Once Daily Caplet 185 Count
CITRACAL$22.964.7★11,455 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
Pure Encapsulations Calcium (Citrate) - Supplement for Bone Teeth Colon and Cardiovascular Health Support* - with Premium Calcium Citrate - 60 Capsules
Pure Encapsulations$13.274.7★5,961 rev
Newest
by launch date
Vitamatic Calcium Citrate with Vitamin D3 240 Tablets High Absorption Calcium Citrate with D3 Non-GMO Gluten-Free
Vitamatic$14.59128 rev
Calcium Supplements for Women Softgels High Absorption Calcium Citrate Supplement Essential Mineral Calcium 1200 mg with Vitamin D3 Magnesium for Bone Health Support Non-GMO 2 Month Supply
HZZYPLANT$9.86280 rev
Calcium Citrate 1200mg Supplement with Vitamin D3 for Women and Men - Calcium Magnesium Zinc D3 Supplement for Bone Teeth Immune Support Vegan-Friendly - 120 Tablets
WOGORGT$18.21303 rev
![NatureWise Calcium Citrate 500mg Capsules - Supplement for Bone Health - Easy to Digest & Absorb - Vegan Non-GMO Gluten-Free - 90 Count[30-Day Supply]](https://m.media-amazon.com/images/I/41Vw+Hdvp6L.jpg)
NatureWise Calcium Citrate 500mg Capsules - Supplement for Bone Health - Easy to Digest & Absorb - Vegan Non-GMO Gluten-Free - 90 Count[30-Day Supply]
NatureWise$13.79403 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$24.96132 rev
Trending
90-day click momentumCalcium Supplements for Women Softgels High Absorption Calcium Citrate Supplement Essential Mineral Calcium 1200 mg with Vitamin D3 Magnesium for Bone Health Support Non-GMO 2 Month Supply
HZZYPLANT$9.864.2★
Solaray Calcium Citrate 1000mg - Chelated Calcium Supplement - Supports Bone Strength and Healthy Teeth - Easy to Digest - Vegan - 60 Servings 240 VegCaps
SOLARAY$19.294.4★
Bariatric Advantage Calcium Citrate Chewy Bites 500 mg - Highly Absorbable & Digestible - Vitamin D3 - Easily Chewable Calcium Supplement - Assorted Fruit - 90 Count
Bariatric Advantage$41.824.8★
Vitamatic Calcium Citrate with Vitamin D3 240 Tablets High Absorption Calcium Citrate with D3 Non-GMO Gluten-Free
Vitamatic$14.593.9★
21st Century Calcium Citrate Plus D3 Maximum - 630 mg Calcium Bone Health Support Easily Absorbable Gluten Free Non-GMO Compare to Citracal +D3 400 Tablets
21st Century$21.994.7★
What buyers say about calcium citrate
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent calcium supplement”
“Very good product as described”
“Great deal”
“Soft & chewy”
“Best Vitamins”
“As advertised”
“Ease of use”
“great plain taste”
“Effective”
“Good price value for dosage”
What buyers complain about
“They are small”
“painful to swallow”
“This 1000mg Calcium CITRATE is only 85% Citrate”
“misleading doseage”
“Weird smell”
“Tastes like chemicals”
“Priced a little too high”
“Wrong vitamins, as I can't swallow that type”
“upset my stomach”
“Misleading product”
Top return reasons
Common questions
- Is calcium citrate profitable to sell on Amazon United States?
- The niche generates $4.9M/yr across 39 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is +0.1%. Flapen's verdict: Launch it (64/100).
- How competitive is the calcium citrate niche?
- 23 brands and 149 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 76% of demand.
- What do buyers complain about in calcium citrate?
- Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Calcium. The return rate is 0.0%.
- When does demand for calcium citrate peak?
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- What does it cost to enter the calcium citrate niche?
- Listings span $7.37–$41.82; the average listing price is $18.86 (sweet spot $15–$100). The average incumbent carries 6,033 reviews — the moat a new listing must climb.