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Vitamin

Vitamin B2

Vitamin B2, or riboflavin, is an essential water-soluble vitamin found in milk, eggs, meat and green vegetables, and is part of enzymes in energy metabolism.

Also listed as Riboflavin, Riboflavin (Vitamin B-2)

Essential HealthLongevityEnergyWeight ManagementOrgan Function

What it is studied for

The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.

Essential HealthStrongA3 studies
Oxidative stressLongevitySmallBNo linked study
Energy CrashesEnergySmallCNo linked study
MetabolismWeight ManagementSmallCNo linked study
Eye HealthOrgan FunctionSmallCNo linked study
Every rating with its studiesGrouped by health goal, with the publications behind each rating

Key studies

The most recent publications linked to Vitamin B2's ratings.

Vitamins and Minerals for Energy, Fatigue and Cognition: A Narrative Review of the Biochemical and Clinical Evidence2020B Vitamins and Their Role in Immune Regulation and Cancer2020B Vitamins and the Brain: Mechanisms, Dose and Efficacy—A Review2016

Why people take it

Essential Health21.3%
Energy19.1%
Immune Support17.7%
Bone & Joint8.9%
Cognition8.3%
Fitness3.6%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Sources

  1. SuppCo · Vitamin B2 nutrient profile

Further reading

Illustration for Vitamin B2.GuideVitamin B2: riboflavin, lab values and possible signs of deficiencyRiboflavin supports energy and enzyme metabolism. What EGRAC, plasma levels, migraine research and MTHFR findings tell us.Read the article