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Interações medicamentosas

Folic acid + Phenobarbital

Gravidade: Moderada

Folic acid and Phenobarbital: moderate interaction.

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Para profissionais de saúde — apenas referência. Esta página é um resumo breve, não é aconselhamento médico nem substitui a bula oficial ou o julgamento clínico. Verifique sempre antes de prescrever ou dispensar.

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Resumo

Folic acid may modestly reduce phenobarbital concentrations, and long-term phenobarbital use is associated with lower folate status. The combination can affect seizure control, so folate supplementation should be monitored in patients with epilepsy.

O que esta interação significa em palavras simples

Folic acid and Phenobarbital 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.

Nível de evidência: Moderate

Por que acontece

Phenobarbital induces hepatic enzymes and impairs folate status, while folate may increase anticonvulsant metabolism.

O que fazer

Monitor seizure frequency and phenobarbital levels when starting or adjusting folic acid. Supplement folate where indicated at the lowest effective dose.

O que perguntar ao farmacêutico

  • 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Perguntas frequentes

Can I take Folic acid with Phenobarbital?

MediHelp rates the interaction as moderate. Folic acid and Phenobarbital 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 may modestly reduce phenobarbital concentrations, and long-term phenobarbital use is associated with lower folate status. The combination can affect seizure control, so folate supplementation should be monitored in patients with epilepsy.

How serious is the interaction between Folic acid and Phenobarbital?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor seizure frequency and phenobarbital levels when starting or adjusting folic acid. Supplement folate where indicated at the lowest effective dose.

What other medicines interact with Folic acid?

MediHelp also lists interactions of Folic acid with, for example, Ethotoin, Fosphenytoin, Glucarpidase. The full list is on the Folic acid page.

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