BioStacks
Nutricost

Vitamin B2 100 mg

1 Capsule · 120 servings · $0.08/serving

iHerbAmazon

Best for

Energy

Ingredients (1)

Riboflavin

100%

Dose

100 mg

Target

25–100 mg

Form

Budget

Other Ingredients (3)

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

HypromelloseCapsule

Plant-derived capsule material from cellulose

How to Take It

Best taken in the morning

Many people prefer B-vitamins earlier in the day; take with food to avoid nausea.

With food

On the label

As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$9.95

$10$20

Cheaper than 75% of 30 vitamin B2 supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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