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❤️ Vitamin B3
Source Naturals, Niacin, 100 mg, 250 Tabs
Cost per serving
$0.05
Cheap·−77%$11.73last seen · confirm on Amazon
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See the offer Vitamin B3 cost per dose
Currently from $0.047 per serving across our tracked stores. Same molecule, dramatically different per-dose pricing — sorted bottom-up.
Prices checked Jun 25, 2026
See also: best Vitamin B3 deals · Vitamin B3 basics
NEW
❤️ Vitamin B3
Nutricost Niacin (Vitamin B3) 500mg
Cost per serving
$0.05
Cheap·−77%$11.36last seen · confirm on Amazon
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❤️ Vitamin B3
Nutricost Niacin (Vitamin B3) 100mg
Cost per serving
$0.05
Cheap·−77%$11.36last seen · confirm on Amazon
Nutricost · Amazon.com 0
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❤️ Vitamin B3
Source Naturals, Niacin, 100 mg, 100 Tabs
Cost per serving
$0.05
Cheap·−75%$5.08last seen · confirm on Amazon
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❤️ Vitamin B3
Source Naturals, Niacin, 250 mg, 250 Tabs
Cost per serving
$0.05
Avg·−75%$12.95last seen · confirm on Amazon
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❤️ Vitamin B3
Life Extension, Vitamin B3 Niacin, 500 MG, 100 caps
Cost per serving
$0.06
Avg·−71%$6.00last seen · confirm on Amazon
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❤️ Vitamin B3
Now Foods, Niacin, 500 mg, Tr 250 Tabs
Cost per serving
$0.07
Avg·−68%$16.79last seen · confirm on Amazon
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❤️ Vitamin B3
Major Pharmaceuticals, Dietary Supplement Niacin, 500 Mg, 100…
Cost per serving
$0.07
Avg·−67%$6.95last seen · confirm on Amazon
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❤️ Vitamin B3
Now Foods, Niacin, 500Mg, 100 Caps
Cost per serving
$0.08
Avg·−63%$7.74last seen · confirm on Amazon
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See the offer Frequently asked
What is the cheapest Vitamin B3 per dose?+
Source Naturals, Niacin, 100 mg, 250 Tabs — $0.05 per serving ($11.73 for 250 servings), the lowest cost-per-dose vitamin b3 in our Amazon US catalog as of June 2026.
What is the typical cost per dose for Vitamin B3?+
About $0.11 per serving across 61 tracked vitamin b3 products, ranging from $0.05 for the best deals to $0.20 for premium options.
Is the cheapest Vitamin B3 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.