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folate and vitamin b12

B12 and folate work together in methylation

What's happening

B12 and folate are both required for DNA methylation and red blood cell formation. Supplementing folate alone can mask B12 deficiency by correcting anemia while allowing neurological damage to progress — always co-supplement.

Recommendation

When taking folate (especially >400mcg), always include 500-1000mcg B12. Prefer methylfolate + methylcobalamin for MTHFR variants.

Timing

Can take together

Sources

  • NIH Office of Dietary Supplements
  • PMID: 18174293

Frequently Asked Questions

Can I take folate and vitamin b12 together?

B12 and folate work together in methylation. When taking folate (especially >400mcg), always include 500-1000mcg B12. Prefer methylfolate + methylcobalamin for MTHFR variants.

How should I time folate and vitamin b12?

Can take together

Is this interaction dangerous?

This interaction is rated “Synergy” by Formulate. B12 and folate are both required for DNA methylation and red blood cell formation. Supplementing folate alone can mask B12 deficiency by correcting anemia while allowing neurological damage to progress — always co-supplement.

Want to check your whole stack?

The free checker lets you add any combination of supplements and medications at once. Formulate's desktop app goes further — every stack change surfaces interaction alerts automatically.

Medical disclaimer. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.