Using 6S-5-methyltetrahydrofolate instead of folic acid in prenatal multivitamin reduces unmetabolized folic acid concentrations in the mother-fetus dyad: a 24-week randomized controlled trial.

Front Nutr · 2026 · PMC13062212 · PMID 41971363

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did not reach statistical significanceno p-value reported

The covariates were dropped from the model in a step-wise process if they did not reach statistical significance.

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