Cost per serving
vitamin · 37 active deals
Every Vitamin B2 deal here is ranked by cost per dose— what you actually pay per serving, not the sticker price. Forms and absorption differ, so the cheapest bottle isn’t always the cheapest dose.
Right now the best value across our full Vitamin B2 catalog is at $0.06 per serving.
Riboflavin (vitamin B2) is a water-soluble B vitamin that is an essential component of two major coenzymes, flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), which play major roles in energy production; cellular function, growth, and development; and metabolism of fats, drugs, and steroids; FAD is required to convert tryptophan to niacin, FMN is needed to convert vitamin B6 to its coenzyme, and riboflavin helps maintain normal levels of homocysteine. Because riboflavin is required for mitochondrial function, researchers are studying its potential use to prevent or treat migraine headaches; some, but not all, small studies have found a beneficial effect, and the American Academy of Neurology/American Headache Society concluded it is probably effective for preventing migraine headaches, though the Canadian Headache Society notes the supporting evidence is of low quality. Experts have also theorized riboflavin might help prevent DNA damage caused by carcinogens, but data on riboflavin and cancer prevention or treatment are limited and study findings are mixed, and the NIH states future studies including clinical trials are needed to clarify these relationships. Riboflavin is not known to have any clinically relevant interactions with medications. — per the NIH Office of Dietary Supplements; not medical advice.
Riboflavin is available in many dietary supplements, including multivitamin/mineral supplements (which commonly provide 1.3 mg, 100% of the Daily Value), riboflavin-only supplements, and B-complex vitamins that include riboflavin. In most supplements riboflavin is in the free form, but some supplements contain riboflavin 5'-phosphate. About 95% of riboflavin as FAD or FMN from food is bioavailable up to a maximum of about 27 mg per meal or dose, and the bioavailability of free riboflavin is similar to that of FAD and FMN.
Foods that are particularly rich in riboflavin include eggs, organ meats (kidneys and liver), lean meats, and milk; some vegetables also contain riboflavin, and grains and cereals are fortified with riboflavin in the United States and many other countries. The largest dietary contributors of total riboflavin intake in U.S. men and women are milk and milk drinks, bread and bread products, mixed foods whose main ingredient is meat, ready-to-eat cereals, and mixed foods whose main ingredient is grain. (Among selected foods, pan-fried beef liver is especially high, at 2.9 mg per 3-ounce serving.) — per the NIH Office of Dietary Supplements.
Groups most likely to have inadequate riboflavin status include vegetarian athletes; pregnant and lactating women (and their infants) who rarely consume meats or dairy; people who are vegan and/or consume little milk; and people with riboflavin transporter deficiency. The signs and symptoms of riboflavin deficiency (ariboflavinosis) include skin disorders, hyperemia and edema of the mouth and throat, angular stomatitis, cheilosis (swollen, cracked lips), hair loss, reproductive problems, sore throat, itchy and red eyes, and degeneration of the liver and nervous system; if severe and prolonged, anemia and cataracts can develop. — per the NIH Office of Dietary Supplements.
Intakes of riboflavin from food that are many times the RDA have no observable toxicity, possibly because riboflavin's solubility and capacity to be absorbed in the gastrointestinal tract are limited. Because adverse effects from high riboflavin intakes from foods or supplements (400 mg/day for at least 3 months) have not been reported, the FNB did not establish a Tolerable Upper Intake Level (UL) for riboflavin; however, the FNB urges people to be cautious about consuming excessive amounts. — per the NIH Office of Dietary Supplements.
Cost per serving
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$0.36
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$0.15
Avg·−30%Cost per serving
$0.14
Avg·−35%Cost per serving
$0.13
Avg·−39%Cost per serving
$5.59
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$0.12
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$0.29
PriceyCost per serving
$0.07
Avg·−71%Cost per serving
$0.07
Cheap·−75%Cost per serving
$0.23
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$0.21
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$0.08
Avg·−67%Cost per serving
$0.11
Avg·−55%Cost per serving
$0.06
Cheap·−77%Cost per serving
$0.18
PriceyCost per serving
$0.15
Avg·−30%Cost per serving
$0.06
Cheap·−76%Cost per serving
$0.10
Avg·−59%Cost per serving
$0.07
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$0.10
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<$0.001
Cheap·−99%Cost per serving
<$0.001
Cheap·−99%Cost per serving
$0.16
AvgAmazon.com · 🫀 CoQ10
CPS
Price
$11.03
Amazon.com · 🫀 CoQ10
CPS
Price
$21.49
Amazon.com · 🥛 Vitamin B2
CPS
Price
$17.99
Amazon.com · 🥛 Vitamin B2
CPS
Price
$16.99
Amazon.com · 🥛 Vitamin B2
CPS
Price
$15.99
Amazon.com · 🥛 Vitamin B2
CPS
Price
$11.18
HerbsPro · 🥛 Vitamin B2
CPS
Price
$11.99
HerbsPro · 🥛 Vitamin B2
CPS
Price
$34.99
HerbsPro · 🥛 Vitamin B2
CPS
Price
$7.48
HerbsPro · 🥛 Vitamin B2
CPS
Price
$6.83
HerbsPro · 🥛 Vitamin B2
CPS
Price
$6.83
HerbsPro · 🥛 Vitamin B2
CPS
Price
$10.69
HerbsPro · 🥛 Vitamin B2
CPS
Price
$8.28
HerbsPro · 🥛 Vitamin B2
CPS
Price
$10.50
HerbsPro · 🥛 Vitamin B2
CPS
Price
$15.75
HerbsPro · 🥛 Vitamin B2
CPS
Price
$17.89
HerbsPro · 🥛 Vitamin B2
CPS
Price
$15.09
HerbsPro · 🥛 Vitamin B2
CPS
Price
$6.45
HerbsPro · 🥛 Vitamin B2
CPS
Price
$9.78
HerbsPro · 🥛 Vitamin B2
CPS
Price
$7.04
HerbsPro · 🥛 Vitamin B2
CPS
Price
$10.49
Amazon.com · 🥛 Vitamin B2
CPS
Price
$0.07
Micro Ingredients · Amazon.com · 🥛 Vitamin B2
CPS
Price
$0.07
Amazon.com · 🥛 Vitamin B2
CPS
Price
$0.31
Dosage, upper-limit, deficiency and interaction facts are sourced from the NIH Office of Dietary Supplements Vitamin B2 fact sheet. General information, not medical advice.
$5.52