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Cheapest Riboflavin (B2) on iHerb

Ranked by real cost per 100 mcg of Riboflavin (B2) — cheapest value first.

Prices updated Jul 25, 2026 · 25 products · Prices in USD

The priciest option here costs about 24.9× more per 100 mcg of Riboflavin (B2) than the best-value pick NutraBio. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mcg
1
NutraBio, MRP 40:40:20 Meal Replacement, Creamy Vanilla, 2.4 lb (1,096 g)
NutraBio, MRP 40:40:20 Meal Replacement, Creamy Vanilla, 2.4 lb (1,096 g)
NutraBio
850 mcg182.000.013View on iHerb →
2
Nutricost, Vitamin B2, 400 mg, 120 Capsules
Nutricost, Vitamin B2, 400 mg, 120 Capsules
Nutricost
400 mg12014.950.031View on iHerb →
3
Best Naturals, Vitamin B-2 (Riboflavin), 400 mg, 120 Vegetarian Capsules
Best Naturals, Vitamin B-2 (Riboflavin), 400 mg, 120 Vegetarian Capsules
Best Naturals
400 mg12015.050.031View on iHerb →
4
Vitamatic, Vitamin B-2, 250 mg , 200 Vegetable Capsules
Vitamatic, Vitamin B-2, 250 mg , 200 Vegetable Capsules
Vitamatic
250 mg20016.990.034View on iHerb →
5
DaVinci Laboratories, Stress B Capsules , 90 Capsules
DaVinci Laboratories, Stress B Capsules , 90 Capsules
DaVinci Laboratories
55 mg902.000.040View on iHerb →
6
Forest Leaf, Riboflavin Vitamin B2, 400 mg, 90 Vegetable Capsules
Forest Leaf, Riboflavin Vitamin B2, 400 mg, 90 Vegetable Capsules
Forest Leaf
400 mg9017.990.050View on iHerb →
7
Nature's Life, Vitamin B-2, Energizing, 100 Tablets
Nature's Life, Vitamin B-2, Energizing, 100 Tablets
Nature's Life
250 mg10017.890.072View on iHerb →
8
Nutricost, Vitamin B2, 400 mg, 30 Capsules
Nutricost, Vitamin B2, 400 mg, 30 Capsules
Nutricost
400 mg308.990.075View on iHerb →
9
Carlson, Vitamin B-2, 250 Vegetarian Tablets
Carlson, Vitamin B-2, 250 Vegetarian Tablets
Carlson
100 mg25018.870.076View on iHerb →
10
Nutricost, Vitamin B2, 100 mg, 120 Capsules
Nutricost, Vitamin B2, 100 mg, 120 Capsules
Nutricost
100 mg12010.000.083View on iHerb →
11
Carlson, Vitamin B-2, 100 Vegetarian Tablets
Carlson, Vitamin B-2, 100 Vegetarian Tablets
Carlson
100 mg1008.420.084View on iHerb →
12
YumVs, Kids, Multi V with Multi-Mineral Formula, Milk Chocolate , 60 Bears
YumVs, Kids, Multi V with Multi-Mineral Formula, Milk Chocolate , 60 Bears
YumVs
500 mcg3017.990.120View on iHerb →
13
Nutricost, Vitamin B Complex, 462 mg, 240 Capsules
Nutricost, Vitamin B Complex, 462 mg, 240 Capsules
Nutricost
75 mg24028.750.160View on iHerb →
14
Nutricost, Vitamin B Complex, 462 mg, 120 Capsules
Nutricost, Vitamin B Complex, 462 mg, 120 Capsules
Nutricost
75 mg12014.950.166View on iHerb →
15
Super Nutrition, Simply One®, Men's 50+ Multivitamin with Super Adaptogens, B12, Greens, Spices & Antioxidants, 90 Tablets
Super Nutrition, Simply One®, Men's 50+ Multivitamin with Super Adaptogens, B12, Greens, Spices & Antioxidants, 90 Tablets
Super Nutrition
13 mg902.000.171View on iHerb →
16
NutraChamps, Multi, Perfect Men's Multivitamin Gummies, Raspberry, 120 Vitamin Gummies
NutraChamps, Multi, Perfect Men's Multivitamin Gummies, Raspberry, 120 Vitamin Gummies
NutraChamps
330 mcg3016.950.171View on iHerb →
17
Oregon's Wild Harvest, Stress Guard, 90 Vegan Capsules
Oregon's Wild Harvest, Stress Guard, 90 Vegan Capsules
Oregon's Wild Harvest
530 mcg3027.960.176View on iHerb →
18
Nature's Truth, Balanced B-100, High Potency, 60 Capsules
Nature's Truth, Balanced B-100, High Potency, 60 Capsules
Nature's Truth
100 mg6011.540.192View on iHerb →
19
Nature's Craft, Super B Complex, High Strength, 100 Tablets
Nature's Craft, Super B Complex, High Strength, 100 Tablets
Nature's Craft
100 mg10019.990.200View on iHerb →
20
Nutricost, Vitamin B2, 100 mg, 30 Capsules
Nutricost, Vitamin B2, 100 mg, 30 Capsules
Nutricost
100 mg307.500.250View on iHerb →
21
Nutricost, R-5-P, 50 mg, 120 Capsules
Nutricost, R-5-P, 50 mg, 120 Capsules
Nutricost
50 mg12015.950.266View on iHerb →
22
California Gold Nutrition, Stress Support with L-Theanine, Ashwagandha, Botanical Blend, and Enzymes, 60 Veggie Capsules
California Gold Nutrition, Stress Support with L-Theanine, Ashwagandha, Botanical Blend, and Enzymes, 60 Veggie Capsules
California Gold Nutrition
25 mg302.000.267View on iHerb →
23
NaturesPlus, Source of Life®, Green and Red Mini-Tabs, 180 Tablets
NaturesPlus, Source of Life®, Green and Red Mini-Tabs, 180 Tablets
NaturesPlus
25 mg302.000.267View on iHerb →
24
Nature's Life, MigraSoothe, Quick-Caps, 60 VegCaps
Nature's Life, MigraSoothe, Quick-Caps, 60 VegCaps
Nature's Life
200 mg3018.990.317View on iHerb →
25
NutraBio, MRP 40:40:20 Meal Replacement, Chocolate Milkshake, 2.5 lb (1,115 g)
NutraBio, MRP 40:40:20 Meal Replacement, Chocolate Milkshake, 2.5 lb (1,115 g)
NutraBio
850 mcg1849.990.327View on iHerb →

How we rank Riboflavin (B2)

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.