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🌙 Magnesium
Nutricost, Magnesium Oxide Capsules, 375 Mg, 240 Count
Cost per serving
$0.05
Cheap·−82%Low absorption
$10.99last seen · confirm on Amazon
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See the offer Magnesium cost per dose
Currently from $0.046 per serving across our tracked stores. Same molecule, dramatically different per-dose pricing — sorted bottom-up.
Prices checked Jun 23, 2026
See also: best Magnesium deals · Magnesium basics
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🌙 Magnesium
Magnesium Malate Capsules (420 Count) - 1
Cost per serving
$0.05
Cheap·−82%$19.96last seen · confirm on Amazon
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🦴 Calcium
Now Foods, Calcium-Magnesium, 500/250 mg, 250 Tabs
Cost per serving
$0.05
$12.60last seen · confirm on Amazon
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🌙 Magnesium
Nature's Truth, Magnesium Coated Caplets Extra Strength, 250…
Cost per serving
$0.05
Cheap·−80%$5.25last seen · confirm on Amazon
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🌙 Magnesium
21st Century, Magnesium Oxide, 400 mg, 90 Tabs
Cost per serving
$0.06
Cheap·−78%Low absorption
$5.02last seen · confirm on Amazon
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🌙 Magnesium
Nutricost Potassium (99 mg) Magnesium (210 mg) Citrates
Cost per serving
$0.06
Cheap·−77%$13.95last seen · confirm on Amazon
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🌙 Magnesium
Nature Made, Magnesium, 250 Mg, 100 Tabs
Cost per serving
$0.06
Cheap·−77%$5.82last seen · confirm on Amazon
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🌙 Magnesium
Nutricost, Magnesium Citrate Capsules, 420 Mg, 240 Count
Cost per serving
$0.07
Avg·−70%Well absorbed
$17.95last seen · confirm on Amazon
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🌙 Magnesium
NatureBell Magnesium Malate 1
Cost per serving
$0.07
Avg·−70%$17.99last seen · confirm on Amazon
Amazon.com 0
See the offer Frequently asked
What is the cheapest Magnesium per dose?+
Nutricost, Magnesium Oxide Capsules, 375 Mg, 240 Count — $0.05 per serving ($10.99 for 240 servings), the lowest cost-per-dose magnesium in our Amazon US catalog as of June 2026.
What is the typical cost per dose for Magnesium?+
About $0.11 per serving across 199 tracked magnesium products, ranging from $0.06 for the best deals to $0.21 for premium options.
Is the cheapest Magnesium 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.