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Reliable1, Calcium Carbonate Antacid, 500 mg, 150 Chewable…
Cost per serving
$0.02
Moderate absorption
$3.15last seen · confirm on Amazon
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See the offer Calcium Carbonate cost per dose
Currently from $0.021 per serving across our tracked stores. Same molecule, dramatically different per-dose pricing — sorted bottom-up.
Prices checked Jun 23, 2026
See also: best Calcium Carbonate deals · Calcium Carbonate basics
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🦴 Calcium
Foster And Thrive, Regular Strength Antacid Calcium Carbonate…
Cost per serving
$0.03
Moderate absorption
$3.99last seen · confirm on Amazon
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🦴 Calcium
Foster And Thrive, Regular Strength Antacid Calcium Carbonate…
Cost per serving
$0.03
Moderate absorption
$3.99last seen · confirm on Amazon
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🦴 Calcium
Foster And Thrive, Extra Strength Antacid Calcium Carbonate…
Cost per serving
$0.04
Moderate absorption
$4.07last seen · confirm on Amazon
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🦴 Calcium
Nature's Bounty Calcium Carbonate & Vitamin D
Cost per serving
$0.04
$11.19last seen · confirm on Amazon
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🦴 Calcium
Nutricost, Calcium Carbonate Magnesium Carbonate, 1200 Mg/150…
Cost per serving
$0.06
Moderate absorption
$14.95last seen · confirm on Amazon
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🦴 Calcium
Foster And Thrive, Extra Strength Antacid Calcium Carbonate…
Cost per serving
$0.06
Moderate absorption
$4.99last seen · confirm on Amazon
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🦴 Calcium
Windmill Health, Calcium Carbonate, 600 mg, 60 Tabs
Cost per serving
$0.07
Moderate absorption
$4.34last seen · confirm on Amazon
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Nature's Blend, Calcium Carbonate With Vitamin D3, 600 mg…
Cost per serving
$0.08
$8.47last seen · confirm on Amazon
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See the offer Frequently asked
What is the cheapest Calcium Carbonate per dose?+
Reliable1, Calcium Carbonate Antacid, 500 mg, 150 Chewable Tabs — $0.02 per serving ($3.15 for 150 servings), the lowest cost-per-dose calcium carbonate in our Amazon US catalog as of June 2026.
What is the typical cost per dose for Calcium Carbonate?+
About $0.04 per serving across 13 tracked calcium carbonate products, ranging from $0.03 for the best deals to $0.07 for premium options.
Is the cheapest Calcium Carbonate the best one to buy?+
Not always. The cheapest is sometimes cheaper because of the form — magnesium oxide costs less than glycinate per gram but absorbs at a fraction of the rate. Weigh cost-per-dose against form bioavailability and third-party testing, not price alone.