Vitamin B2
Best for
Get fewer headaches and migraines
Large effect, needs confirmation · 1 meta-analysis , n=54
2 papers · 3 claims · 4 outcomes scored · 2 positive
Outcomes
What vitamin b2 actually does, by outcome
Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.
Cuts the number of attacks per month so headache days stop piling up.
Headaches steal fewer workdays, social plans, and hours of patience.
Clears a vessel-irritating byproduct that builds when nutrient recycling falls behind.
| Outcome | Effect | Evidence | Dose | Weeks | Rank |
|---|---|---|---|---|---|
| Get fewer headaches and migraines Large effect, needs confirmation | | 1 meta-analysis n=54 Meta-analyzed | — | — | #2/9 |
| Reduce migraine disruption Large effect, needs confirmation | | 1 meta-analysis n=54 Meta-analyzed | — | — | #3/12 |
| Lower homocysteine levels Probably doesn't help | | 1 meta-analysis n=1.4k Meta-analyzed | 8.4 mg | 4 wk | — |
Risk profile
Adverse events and known drug interactions
Safety events
Drug interactions
Sources
Generated August 14, 2026
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