Calcium Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Calcium sales on Amazon US totaled 369,000 units in July 2026 (▼ 11.5% vs. the prior month), generating an estimated $6,595,380 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 48.8% of unit volume and 43.8% of revenue, while a typical listing is priced at $19.32. The keyword itself pulled 162,745 Amazon queries over the same period (▲ 8.2% MoM).
Zooming out to the 12-month window ending July 2026, the calcium Top 50 moved 4,014,900 units and $74,313,214 in cumulative sales — an average of 334,575 units and $6,192,768 per month. Monthly throughput topped out at 417,000 units in June 2026 and dipped to 232,700 in May 2026, leaving the latest reading 34.7% higher than August 2025.
Calcium Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
369K
▼ 11.5% MoM
Monthly Revenue 2026/07
$6.6M
▼ 15.3% MoM
Top 10 Market Share 2026/07
48.8%
Calcium Market Share & Sales Concentration on Amazon US — July 2026
The most-sold calcium listing on Amazon US in July 2026 is ASIN B0CNCL35CH (Brand: Dr.Melaxin), which sold 70,000 units at $19.00 apiece — equal to 19.0% of every unit tracked in this report and 3.5× the volume of the No. 2 listing.
The Top 10 ASINs account for 180,000 units and $2,887,900 in July 2026 — 48.8% of unit volume and 43.8% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Calcium' on Amazon
July 2026
Is 48.8% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B0CNCL35CH
Dr.Melaxin Collagen Multi Balm Stick, Calcium & Adenosine Korean Wrinkle Stick for Eye, Neck & Face, Firming Collagen Stick, Under Eye Balm for Dark Circles & Depuffing, Korean Skin Care, 0.31 oz
70K
▼ 30.0%vs. prior month
$1.3M
latest month
12-month trend
B0016KITZ6
Nature's Bounty Calcium 1200mg with 1000 IU Vitamin D3, 120 Count | Bone Health & Immune Support Softgels, Calcium and Vitamin D Supplement, Gluten Free, 2 Softgels per Day
20K
▲ 0.0%vs. prior month
$175.2K
latest month
12-month trend
B002FH5I0I
Nature Made Calcium 600 mg with Vitamin D3 for Bone Support, 220 Tablets | Calcium Supplement for Bone Health, Dietary Supplement with Calcium and Vitamin D
20K
▲ 0.0%vs. prior month
$323.8K
latest month
12-month trend
B07RF1QQ4H
CITRACAL Slow Release- Calcium 1200 mg with Vitamin D3, Magnesium, Calcium Supplement, Bone Health Support, Take Once Daily Caplet, 185 Count
10K
▼ 50.0%vs. prior month
$248.3K
latest month
12-month trend
B000OD1F7U
Nature Made Calcium Magnesium Zinc with Vitamin D3, 300 Tablets | Magnesium and Calcium Supplement for Bone Support, Vitamin D and Zinc Support a Healthy Immune System
10K
▲ 0.0%vs. prior month
$117.3K
latest month
12-month trend
B0013TMWIK
Caltrate 600 Plus D3 Vitamin D and Calcium Supplement Tablets, 200 Count | Highest Level of Vitamin D3, Maximizes Calcium Absorption to Support Strong Bones and Daily Function
10K
▲ 0.0%vs. prior month
$167.8K
latest month
12-month trend
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Best Calcium Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Dr.Melaxin is the best-performing calcium brand in July 2026, moving 70,000 units across 1 ASIN for 38.9% of Top 10 volume. Nature's Bounty follows with 30,000 units (16.7%), ahead of Nature Made on 30,000 units (16.7%).
With 8 brands splitting the Top 10 and 72.2% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $6.98 to $19.00, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Dr.Melaxin
1 ASIN in Top 10
38.9%
Units
70K
Revenue
$1.3M
Avg. price
$19.00
B0CNCL35CH
$19.00·★4.1·9.3K revsDr.Melaxin Collagen Multi Balm Stick, Calcium & Adenosine Korean Wrinkle Stick for Eye, Neck & Face, Firming Collagen Stick, Under Eye Balm for Dark Circles & Depuffing, Korean Skin Care, 0.31 oz
Units sold70K
Nature's Bounty
2 ASINs in Top 10
16.7%
Units
30K
Revenue
$233.6K
Avg. price
$6.98
B0016KITZ6
$8.12·★4.6·43.8K revsNature's Bounty Calcium 1200mg with 1000 IU Vitamin D3, 120 Count | Bone Health & Immune Support Softgels, Calcium and Vitamin D Supplement, Gluten Free, 2 Softgels per Day
Units sold20KB002BXAMJS
$5.84·★4.7·23.2K revsNature's Bounty Calcium Magnesium & Zinc Caplets, 100 Count
Units sold10K
Nature Made
2 ASINs in Top 10
16.7%
Units
30K
Revenue
$441.1K
Avg. price
$11.97
B002FH5I0I
$11.24·★4.7·27.4K revsNature Made Calcium 600 mg with Vitamin D3 for Bone Support, 220 Tablets | Calcium Supplement for Bone Health, Dietary Supplement with Calcium and Vitamin D
Units sold20KB000OD1F7U
$12.70·★4.8·20.2K revsNature Made Calcium Magnesium Zinc with Vitamin D3, 300 Tablets | Magnesium and Calcium Supplement for Bone Support, Vitamin D and Zinc Support a Healthy Immune System
Units sold10K
Trending Calcium Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B00K7RQ1KE leads positive momentum with ▲ 150.0% MoM growth on 10K units, with B000I4DLJK close behind at ▲ 100.0% MoM on 2K units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B00K7RQ1KE
Caltrate Minis 600 Plus D3 Vitamin D and Calcium Supplement Tablets, 150 Ct | Highest Level of Vitamin D3, Maximizes Calcium Absorption to Support Strong Bones and Daily Function
Price
$18.79
Rating
4.8
Reviews
7.8K
Latest month sales
B000I4DLJK
NOW Foods Supplements, Calcium Hydroxyapatite Caps, Supports Bone Health*, 120 Capsules
Price
$12.24
Rating
4.7
Reviews
1.7K
Latest month sales
B0043ZLTT4
CITRACAL Petites, 400 mg Calcium Citrate, Easily Absorbed and Highly Soluble with 12.5 mcg (500 IU) Vitamin D3, Smaller and Easier to Swallow Caplets, 200 Count
Unlock to view ASIN details and product titles
Price
$10.92
Rating
4.7
Reviews
7.7K
Latest month sales
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