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🌀 Spirulina
Carlyle Organic Spirulina Tablets | 3500mg | 500 Count…
Cost per serving
$0.03
Cheap·−88%$14.99last seen · confirm on Amazon
Amazon.com 0
See the offer Spirulina cost per dose
Currently from $0.030 per serving across our tracked stores. Same molecule, dramatically different per-dose pricing — sorted bottom-up.
Prices checked Jun 23, 2026
See also: best Spirulina deals · Spirulina basics
NEW
🌀 Spirulina
Probase Nutrition Organic Spirulina Supplement
Cost per serving
$0.04
Cheap·−86%$25.99last seen · confirm on Amazon
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🌀 Spirulina
Now Foods, Spirulina, 500 mg, 500 Tabs
Cost per serving
$0.05
Cheap·−81%$24.55last seen · confirm on Amazon
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🌀 Spirulina
On Target Living Organic Spirulina Chlorella | Supergreens…
Cost per serving
$0.05
Cheap·−81%$49.99last seen · confirm on Amazon
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🌀 Spirulina
Nutricost, Spirulina Tablets Organic, 500 Mg, 240 Count
Cost per serving
$0.05
Cheap·−79%$12.95last seen · confirm on Amazon
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🌀 Spirulina
Now Foods, Spirulina, 500 mg, 200 Tabs
Cost per serving
$0.06
Cheap·−77%$11.62last seen · confirm on Amazon
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🌀 Spirulina
Source Naturals, Spirulina, 500 MG, 500 Tabs
Cost per serving
$0.06
Cheap·−75%$32.19last seen · confirm on Amazon
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🌀 Spirulina
Now Foods, Spirulina, 500 mg, 100 Tabs
Cost per serving
$0.06
Cheap·−75%$6.45last seen · confirm on Amazon
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🌀 Spirulina
Source Naturals, Spirulina, 500 MG, 200 Tabs
Cost per serving
$0.07
Avg·−71%$13.99last seen · confirm on Amazon
HerbsPro 0
See the offer Frequently asked
What is the cheapest Spirulina per dose?+
Carlyle Organic Spirulina Tablets | 3500mg | 500 Count | Vegetarian — $0.03 per serving ($14.99 for 500 servings), the lowest cost-per-dose spirulina in our Amazon US catalog as of June 2026.
What is the typical cost per dose for Spirulina?+
About $0.10 per serving across 29 tracked spirulina products, ranging from $0.06 for the best deals to $0.14 for premium options.
Is the cheapest Spirulina 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.