Skip to content

01Markers · B vitamins

Folate

Vitamin B9, needed to make DNA and red blood cells. Serum folate reflects recent intake; red-cell folate reflects the past few months.

Measured in
Blood (serum or red cells)
Units
ng/mL, nmol/L
Also called
folic acid, vitamin B9, RBC folate
  1. Vitamin C
  2. Resveratrol
  3. Iron
  4. Zinc
  5. Omega-3
  6. Magnesium
  7. Ashwagandha
  8. Berberine
  9. Collagen
  10. Creatine
  11. Finnish sauna
  12. HIIT
  13. L-carnitine
  14. L-theanine
  15. Lion's mane
  16. Melatonin
  17. Milk thistle
  18. NAC
  19. NAD+
  20. PQQ
  21. Red yeast rice
  22. Taurine
  23. Ubiquinol (CoQ10)
  24. Vitamin D3
  25. Vitamin E
  26. Vitamin K2
  27. Zone 2 cardio
Folate across the 27 supplements and practices researched so far · best evidence first

AWhat moves Folate

6 of 27 studied

In human studies, 1 of the 27 supplements and practices researched so far lowered folate and 1 raised it. 4 showed no change. 21 were never studied for it.
  • Supported 2
  • No effect 4
  • Conflicting 0
  • Not studied 21

Studied, no change4

Studies looked and found no meaningful change. That is a result, not missing data.

IronNo changeGrade A
ZincNo changeGrade A
Omega-3No changeGrade B
MagnesiumNo changeGrade D

Studies of Magnesium found no change in folate.

Not studied21

No usable human study has measured Folate with these. A gap is not a negative result: nobody has looked.

AshwagandhaBerberineCollagenCreatineFinnish saunaHIITL-carnitineL-theanineLion's maneMelatoninMilk thistleNACNAD+PQQRed yeast riceTaurineUbiquinol (CoQ10)Vitamin D3Vitamin EVitamin K2Zone 2 cardio

Why trials measure it. Supplement trials report it to confirm that folate or folic acid was absorbed.

About this marker: Folic acid - test (MedlinePlus, U.S. National Library of Medicine).

Evidence states come from published human studies found in PubMed and OpenAlex and read by a model pipeline. "Not studied" means no usable human study was found for this marker, which is a gap, not a negative result. Every result links its studies so you can check it.

Research summary for education. Not medical advice.