Is Folate (Methylfolate) Safe with Norethindrone?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Use the active form of folate — methylfolate (5-MTHF) at 400–800 mcg daily — as it bypasses absorption issues associated with contraceptive use. This is especially important for women with MTHFR gene variants or those planning pregnancy.
Why this interaction occurs
Progestin-containing contraceptives like norethindrone have been associated with impaired folate metabolism and reduced cervical cell folate concentrations. The active methylfolate form is recommended to ensure adequate tissue levels regardless of metabolic polymorphisms.
Evidence
Evidence level: strong.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 8,508 reports mentioning Norethindrone. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Norethindrone + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Folate (Methylfolate) interactions → · All Norethindrone interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.