Interazioni tra farmaci
Folic Acid + Methotrexate
Gravità: Moderata
Folic Acid and Methotrexate: moderate interaction.
Ultimo aggiornamento Fonti: US FDA label
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Sintesi
Folic acid is routinely co-prescribed with low-dose weekly methotrexate to reduce nausea, mouth ulcers, and liver enzyme elevations without meaningfully reducing efficacy in rheumatoid arthritis or psoriasis. In oncology, folate supplementation could theoretically reduce the antineoplastic effect of methotrexate, particularly at high doses, so it is not given outside protocols.
Cosa significa questa interazione in parole semplici
Folic Acid and Methotrexate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Folic Acid belongs to Miscellaneous; Methotrexate belongs to Oncology.
Perché avviene
Pharmacodynamic antagonism: methotrexate inhibits dihydrofolate reductase, and folate repletion restores folate-dependent pathways in normal cells, reducing toxicity.
Cosa fare
For low-dose weekly methotrexate in rheumatologic or dermatologic disease, give folic acid at a typical dose of 5 mg weekly or 1 mg daily, commonly on a day other than the methotrexate dose. Monitor blood counts, liver enzymes, and renal function regularly, and assess disease control.
Cosa chiedere al farmacista
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Riferimenti
- Methotrexate Injection/Tablets Prescribing Information - Drug Interactions — FDA Label
- 2021 American College of Rheumatology Guideline for the Treatment of Rheumatoid Arthritis — ACR Guideline
Altre interazioni di Methotrexate
- Acitretin + Methotrexate Controindicata
- Adenovirus types 4 and 7 live + Methotrexate Controindicata
- Influenza virus vaccine quadrivalent intranasal + Methotrexate Controindicata
- Ketorolac + Methotrexate Controindicata
- Measles mumps and rubella vaccine live + Methotrexate Controindicata
- Measles mumps and rubella vaccine + Methotrexate Controindicata
Altre interazioni di Folic Acid
- Ethotoin + Folic Acid Moderata
- Folic Acid + Fosphenytoin Moderata
- Folic Acid + Glucarpidase Moderata
- Folic Acid + Pafolacianine Moderata
- Folic Acid + Phenobarbital Moderata
- Folic Acid + Phenytoin Moderata
Domande frequenti
Can I take Folic Acid with Methotrexate?
MediHelp rates the interaction as moderate. Folic Acid and Methotrexate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Folic acid is routinely co-prescribed with low-dose weekly methotrexate to reduce nausea, mouth ulcers, and liver enzyme elevations without meaningfully reducing efficacy in rheumatoid arthritis or psoriasis. In oncology, folate supplementation could theoretically reduce the antineoplastic effect of methotrexate, particularly at high doses, so it is not given outside protocols.
How serious is the interaction between Folic Acid and Methotrexate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: For low-dose weekly methotrexate in rheumatologic or dermatologic disease, give folic acid at a typical dose of 5 mg weekly or 1 mg daily, commonly on a day other than the methotrexate dose. Monitor blood counts, liver enzymes, and renal function regularly, and assess disease control.
What other medicines interact with Methotrexate?
MediHelp also lists interactions of Methotrexate with, for example, Acitretin, Adenovirus types 4 and 7 live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Methotrexate page.
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