
Source Naturals, Vitamin B-2, 100 mg, 250 Tabs
Cost per serving
$0.06
Cheap·−77%Currently from $0.063 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 B2 deals · Vitamin B2 basics

Cost per serving
$0.06
Cheap·−77%
Cost per serving
$0.06
Cheap·−76%
Cost per serving
$0.07
Cheap·−75%
Cost per serving
$0.07
Cheap·−75%
Cost per serving
$0.07
Avg·−74%
Cost per serving
$0.07
Avg·−71%
Cost per serving
$0.08
Avg·−68%
Cost per serving
$0.08
Avg·−67%
Cost per serving
$0.08
Avg·−65%Source Naturals, Vitamin B-2, 100 mg, 250 Tabs — $0.06 per serving ($15.75 for 250 servings), the lowest cost-per-dose vitamin b2 in our Amazon US catalog as of June 2026.
About $0.11 per serving across 37 tracked vitamin b2 products, ranging from $0.07 for the best deals to $0.16 for premium options.
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.