Best Calcium

Q: What is the best-value Calcium supplement?

21st Century Calcium 600 mg Supplement (400 Tablets) — <$0.001 per serving ($0.03 for 400 servings), the lowest cost-per-dose calcium in our Amazon US catalog as of June 2026.

Q: What is the typical cost per dose for Calcium?

About $0.10 per serving across 125 tracked calcium products, ranging from $0.05 for the best deals to $0.16 for premium options.

The best calcium we track, ranked by real cost-per-dose — not paid placements. Across 125 tracked options the typical dose runs $0.10 per serving.

Prices checked Jun 25, 2026

Forms:Carbonate Citrate

Best value21st Century Calcium 600 mg Supplement (400 Tablets)

<$0.001 per serving — the cheapest calcium dose we track.

$0.03

<$0.001/serving

Get deal

3rd-party testedNature Made Calcium Gummies 500 mg Per Serving with Vitamin D3

Lab-verified brand at $0.001 per serving.

$0.11

$0.001/serving

Get deal

Full ranking by cost per dose

Cost-per-serving normalizes price across bottle sizes — a 60-count and a 365-count compare fairly. Top 20 of 50 shown.

#	Product	Form · dose	Servings	Price	$ / serving
1	21st Century Calcium 600 mg Supplement (400 Tablets)	tablet · 600mg	400	$0.03	<$0.001
2	Nature Made Calcium Gummies 500 mg Per Serving…	gummy · 500mg	80	$0.11	$0.001
3	21st Century, Calcium Plus Vitamin D3, 500mg, 400 Tabs	tablet · 500mg	400	$7.72	$0.02
4	Foster And Thrive, Regular Strength Antacid Calcium…	tablet · 500mg	150	$3.99	$0.03
5	Doctor's Best Natural Vitamin K2 MK7 Supplement for Men…	capsule · 100mcg	7	$0.20	$0.03
6	21st Century, Calcium Supplement, 600 mg, 400 Tabs	tablet · 600mg	400	$12.00	$0.03
7	Major Pharmaceuticals, Oyster Shell Calcium, 500 Mg, 300…	tablet · 500mg	300	$10.00	$0.03
8	Now Foods, Calcium-Magnesium, 500/250 mg, 250 Tabs	tablet · 250mg	250	$12.60	$0.05
9	21st Century, Calcium Plus Vitamin D3, 500mg, 90 Tabs	tablet · 500mg	90	$4.95	$0.06
10	Major Pharmaceuticals, Oyster Shell Calcium with Vitamin…	tablet · 500mg	60	$3.32	$0.06
11	21st Century, Calcium Supplement, 600 mg, 75 Tabs	tablet · 600mg	75	$4.50	$0.06
12	Foster And Thrive, Extra Strength Antacid Calcium…	tablet · 750mg	80	$4.99	$0.06
13	Nature's Blend, Calcium Oyster Shell, 500 mg, 200 Tabs	tablet · 500mg	200	$13.34	$0.07
14	Source Naturals, Triple Boron, 3 mg, Advanced,…	capsule · 3mg	240	$17.15	$0.07
15	Source Naturals, Triple Boron, 3 mg, Advanced,…	capsule · 3mg	120	$9.09	$0.08
16	Basic Vitamins, Calcium With D, 600 Mg, 60 Tabs	tablet · 600mg	60	$4.55	$0.08
17	Nutricost, Calcium Magnesium Tablets, 1000 Mg/400 Mg…	tablet · 1000mg	180	$13.95	$0.08
18	Nature Made, Calcium With D3, 500 Mg, 130 Tabs	tablet · 500mg	130	$10.57	$0.08
19	Source Naturals, Calcium, 200 mg, 100 Tabs	tablet · 200mg	100	$8.39	$0.08
20	Gericare, Fiber Laxative Calcium Polycarbophil, 625 Mg…	capsule · 625mg	90	$7.76	$0.09

Frequently asked

What is the best-value Calcium supplement?+

21st Century Calcium 600 mg Supplement (400 Tablets) — <$0.001 per serving ($0.03 for 400 servings), the lowest cost-per-dose calcium in our Amazon US catalog as of June 2026.

What is the typical cost per dose for Calcium?+

About $0.10 per serving across 125 tracked calcium products, ranging from $0.05 for the best deals to $0.16 for premium options.