What kind of interaction is it?

Synergy: a documented combination effect that is stronger or more useful than either substance taken alone.

Is this interaction backed by published research?

Yes. NutriStack lists 2 citation rows for the Combined Oral Contraceptive + Methylfolate pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Interaction databaseSupplement × PrescriptionReviewed May 2026

Combined Oral Contraceptive and Methylfolate, a synergy.

Q: Can I take Combined Oral Contraceptive and Methylfolate together?

Yes. The combination of Combined Oral Contraceptive and Methylfolate produces a measurable benefit. Methylfolate (5-MTHF) is the active circulating form of folate and is the preferred supplement for women on combined oral contraceptives, particularly those with MTHFR variants. COCs lower serum and red-cell folate, and 5-MTHF restores levels quickly without dependence on hepatic conversion of folic acid.

Q: How does this affect a NutriStack Stack Score?

+2 to your Stack Score per scored synergy row.

Methylfolate (5-MTHF) is the active circulating form of folate and is the preferred supplement for women on combined oral contraceptives, particularly those with MTHFR variants. COCs lower serum and red-cell folate, and 5-MTHF restores levels quickly without dependence on hepatic conversion of folic acid.

2 primary source citations. Moderate evidence. Last verified May 30, 2026.

Open the interaction checker →Read the methodology

One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.

Sourcing standards·Evidence tiers

From the interaction database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.

At a glance

Substances: Combined Oral Contraceptive and Methylfolate
Pair type: Synergy
Evidence (highest tier): Moderate
Source citations: 2 sources
Stack Score effect: +2 to your Stack Score (per scored synergy row).
Scope: Supplement × Prescription
Last verified: May 30, 2026

Synergy · Moderate evidence

Synergy

What is happening. Methylfolate (5-MTHF) is the active circulating form of folate and is the preferred supplement for women on combined oral contraceptives, particularly those with MTHFR variants. COCs lower serum and red-cell folate, and 5-MTHF restores levels quickly without dependence on hepatic conversion of folic acid.

Mechanism. COCs reduce folate via increased binding protein and altered metabolism. Methylfolate bypasses the MTHFR enzyme step and replenishes the methyl donor pool needed for homocysteine remethylation, DNA synthesis, and neural tube closure in early pregnancy.

Recommendation. Take methylfolate 400-800 mcg daily while on combined oral contraception, especially if you plan to conceive after stopping. Methylfolate can be taken at any time of day, with or without the pill.

Sources (2)

Stack Score

How this pair moves the number.

Effect on the composite score

If both Combined Oral Contraceptive and Methylfolate are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).

The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.

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