Calcium Supplement Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Calcium Supplement sales on Amazon US totaled 642,000 units in July 2026 (▼ 9.7% vs. the prior month), generating an estimated $13,247,600 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 62.3% of unit volume and 60.3% of revenue, while a typical listing is priced at $21.31. The keyword itself pulled 31,150 Amazon queries over the same period (▲ 15.5% MoM).
Zooming out to the 12-month window ending July 2026, the calcium supplement Top 50 moved 7,306,400 units and $150,397,085 in cumulative sales — an average of 608,867 units and $12,533,090 per month. Monthly throughput topped out at 711,000 units in June 2026 and dipped to 405,000 in May 2026, leaving the latest reading 8.4% higher than August 2025.
Calcium Supplement 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
642K
▼ 9.7% MoM
Monthly Revenue 2026/07
$13.2M
▼ 8.1% MoM
Top 10 Market Share 2026/07
62.3%
Calcium Supplement Market Share & Sales Concentration on Amazon US — July 2026
The most-sold calcium supplement listing on Amazon US in July 2026 is ASIN B07P5K7DQP (Brand: Pure Encapsulations), which sold 100,000 units at $27.00 apiece — equal to 15.6% of every unit tracked in this report and 11% ahead of the No. 2 listing.
The Top 10 ASINs account for 400,000 units and $7,992,000 in July 2026 — 62.3% of unit volume and 60.3% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Calcium Supplement' on Amazon
July 2026
Is 62.3% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B07P5K7DQP
Pure Encapsulations Magnesium (Glycinate), 90 Capsules | Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism*, with Magnesium Glycinate
100K
▲ 0.0%vs. prior month
$2.7M
latest month
12-month trend
B07255MPRN
Sports Research® Vegan Vitamin D3 + K2 w/Coconut Oil, 60 Count Plantgels™ | Plant-Based Vitamin D 5000iu/125mcg & Soy-Free Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO
90K
▼ 10.0%vs. prior month
$2.2M
latest month
12-month trend
B00GB85JR4
NatureWise Vitamin D3 5000IU Supplement, Immune Support, 360 Mini Softgels | Vitamin D 125 mcg - Organic Extra Virgin Olive Oil - Muscle & Bone Support - Gluten Free & USA Manufactured - 1-Year Supply
50K
▲ 0.0%vs. prior month
$749.5K
latest month
12-month trend
B09SR2KX9D
Nature Made Vitamin D3 K2 Supplement, 30 Softgels | Vitamin D 5000 IU (125 mcg) for Immune, Bone, Teeth and Muscle Health Support, 30 Day Supply
50K
▼ 28.6%vs. prior month
$634.5K
latest month
12-month trend
B09KCCVL9V
Centrum Silver Women's Multivitamin for Women 50 and Over, 200 Tablets | Contains Vitamin D3, B Vitamins, Calcium, and Antioxidants, Non-GMO Ingredients, Supports Memory and Cognition, GLP-1 Support
40K
▲ 33.3%vs. prior month
$732.4K
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
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Best Calcium Supplement Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Pure Encapsulations is the best-performing calcium supplement brand in July 2026, moving 100,000 units across 1 ASIN for 25.0% of Top 10 volume. Sports Research follows with 90,000 units (22.5%), ahead of Nature Made on 80,000 units (20.0%).
With 7 brands splitting the Top 10 and 67.5% 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 $12.17 to $27.00, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Pure Encapsulations
1 ASIN in Top 10
25.0%
Units
100K
Revenue
$2.7M
Avg. price
$27.00
B07P5K7DQP
$27.00·★4.7·50.8K revsPure Encapsulations Magnesium (Glycinate), 90 Capsules | Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism*, with Magnesium Glycinate
Units sold100K
Sports Research
1 ASIN in Top 10
22.5%
Units
90K
Revenue
$2.2M
Avg. price
$23.95
B07255MPRN
$23.95·★4.8·54.5K revsSports Research® Vegan Vitamin D3 + K2 w/Coconut Oil, 60 Count Plantgels™ | Plant-Based Vitamin D 5000iu/125mcg & Soy-Free Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO
Units sold90K
Nature Made
3 ASINs in Top 10
20.0%
Units
80K
Revenue
$1.1M
Avg. price
$12.17
B09SR2KX9D
$12.58·★4.7·10.9K revsNature Made Vitamin D3 K2 Supplement, 30 Softgels | Vitamin D 5000 IU (125 mcg) for Immune, Bone, Teeth and Muscle Health Support, 30 Day Supply
Units sold50KB002FH5I0I
$11.24·★4.7·27.5K 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 Supplement 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 B0043ZLTT4 close behind at ▲ 75.0% MoM on 7K 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
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
Price
$9.62
Rating
4.7
Reviews
7.7K
Latest month sales
B09KCCVL9V
Centrum Silver Women's Multivitamin for Women 50 and Over, 200 Tablets | Contains Vitamin D3, B Vitamins, Calcium, and Antioxidants, Non-GMO Ingredients, Supports Memory and Cognition, GLP-1 Support
Unlock to view ASIN details and product titles
Price
$14.68
Rating
4.8
Reviews
35.2K
Latest month sales
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