2.5/5
Weak
evidence
Micronutrient evidence brief
B-complex vitamins
B vitamins support normal energy metabolism, but supplementation is unlikely to improve gym performance in users with adequate intake.
Headline Finding
Exercise reviews support correcting deficiency, not boosting performance in already sufficient users.
Dose Context
Use to correct low intake or specific deficiency risk rather than as a stimulant-like energy supplement.
Important Caveat
Do not translate 'energy metabolism' into an ergogenic claim. Excessive high-dose B6 and niacin-style products need safety scrutiny.
Source Drawer
Linked Research
- Review B vitamins and exercise review
- Trial B-complex performance RCT
- Trial B-complex RCT full text
- Review Sports vitamin review
- Review Endurance vitamin review
- Systematic review Micronutrient systematic review
How To Read This Rating
The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
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