Vitamin B9 (Folate) & Vitamin B12 (Cobalamin)

Info Synergy
Vitamin B9 (Folate) → Vitamin B12 (Cobalamin) →
Info Synergy

B12 and folate work together in the methylation cycle and red blood cell formation.

Mechanism

B12 is required to convert methyltetrahydrofolate back to THF, which is needed for DNA synthesis. Deficiency in either impairs the other.

Recommendation

Supplementing both together is beneficial. Note: high-dose folate can mask B12 deficiency symptoms — ensure adequate B12 intake.

Sources

Tolerable upper intake limits

Reference values for safe daily intake of these supplements.

Vitamin B9 (Folate)
1000.000 mcg DFE
adults NIH ODS / IOM

UL applies to folic acid from supplements/fortified foods, not food folate. May mask B12 deficiency.

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Medical Disclaimer: Noyemi provides information from published research for educational purposes only. This content is not medical advice and does not replace consultation with a qualified healthcare provider. Always consult your doctor before starting, stopping, or changing any supplement regimen, especially if you take medications or have existing health conditions.