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Bc
Vitamins
Vitamin B Complex
Full spectrum B vitamins for energy metabolism and nerve function.
What it is
A B-complex provides all 8 essential B vitamins (B1, B2, B3, B5, B6, B7, B9, B12) to support energy production and nervous system health.
How it works
B vitamins serve as coenzymes in energy metabolism (Krebs cycle, electron transport chain), methylation, and neurotransmitter synthesis.
What the evidence says
Strong evidence for correcting deficiency; moderate evidence for energy and mood in those with suboptimal intake.
Safety Notes
- May cause bright yellow urine (riboflavin) — this is harmless. Look for methylated forms (methylfolate, methylcobalamin).
- levodopa: B6 can reduce levodopa efficacy; take B6 only with carbidopa/levodopa combo.
- methotrexate: Folate in complex may reduce methotrexate efficacy; consult oncologist.
Timing With Other Supplements
- Vitamin B12 (Cobalamin): B-complex already contains B12; avoid double-dosing unless directed.
- Folate (Folic Acid / Methylfolate Products): B-complex already contains folate; avoid double-dosing unless directed.