Vitamin B12 and Vitamin B9 (Folate)
Last updated: August 9, 2026
These two enhance each other.
Short answer
Yes. Vitamin B12 and Vitamin B9 (Folate) enhance each other — there's no reason to keep them apart, and pairing them can help each do its job.
Why Vitamin B12 and Vitamin B9 (Folate) help each other
Vitamin B12's page says: Vitamin B12 and folate work together in red-blood-cell formation and DNA synthesis. Getting enough B12 matters even when folate intake is high, since high folate can mask the blood signs of a B12 shortfall.
Vitamin B9 (Folate)'s page says: Folate and vitamin B12 work together in red-blood-cell formation and DNA synthesis. High folate intake can mask the blood signs of a B12 deficiency, letting it go unnoticed.
What this means in practice
Because Vitamin B12 and Vitamin B9 (Folate) work together, there's nothing extra to manage here. You don't need to take them at the exact same time or in the exact same dose — the benefit shows up whenever both are adequately present in your body, whether that's from the same meal, the same supplement, or just the same day.
Learn more about each nutrient
- Vitamin B12 — RDA, upper limit, and food sources.
- Vitamin B9 (Folate) — RDA, upper limit, and food sources.
Frequently asked questions
Can I take Vitamin B12 and Vitamin B9 (Folate) together?
Yes. Vitamin B12 and Vitamin B9 (Folate) enhance each other — there's no reason to keep them apart, and pairing them can help each do its job.
Why do Vitamin B12 and Vitamin B9 (Folate) interact?
From Vitamin B12's side: Vitamin B12 and folate work together in red-blood-cell formation and DNA synthesis. Getting enough B12 matters even when folate intake is high, since high folate can mask the blood signs of a B12 shortfall. From Vitamin B9 (Folate)'s side: Folate and vitamin B12 work together in red-blood-cell formation and DNA synthesis. High folate intake can mask the blood signs of a B12 deficiency, letting it go unnoticed.
Does timing matter for Vitamin B12 and Vitamin B9 (Folate)?
Not especially — this is a helpful pairing, not a competing one, so there's no timing workaround needed.
Sources
The relationship described above comes from the same nutrient config that runs inside the Tavita app — see the methodology pagefor how it's sourced and verified. This page is educational information, not medical advice; talk to your clinician before changing your supplement routine.