Interações medicamentosas
Dihydroergotamine + Isoniazid
Gravidade: Grave
Dihydroergotamine and Isoniazid: major interaction.
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Resumo
Dihydroergotamine levels rise when CYP3A4 is inhibited, risking ergotism with severe peripheral vasospasm and ischemia. Isoniazid is a weaker CYP3A4 inhibitor than agents named in the labeling contraindication, but the toxicity is serious.
O que esta interação significa em palavras simples
Dihydroergotamine and Isoniazid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Dihydroergotamine belongs to Central Nervous System; Isoniazid belongs to Anti Bacterial.
Por que acontece
Inhibition of CYP3A4 metabolism of dihydroergotamine.
O que fazer
Avoid if possible and choose an alternative migraine therapy during isoniazid treatment. If used, monitor for numbness, coldness, or pain in the extremities and stop at the first signs of ischemia.
O que perguntar ao farmacêutico
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Outras interações de Isoniazid
Outras interações de Dihydroergotamine
- Almotriptan + Dihydroergotamine Contraindicada
- Clarithromycin + Dihydroergotamine Contraindicada
- Dihydroergotamine + Dopamine Contraindicada
- Dihydroergotamine + Dronedarone Contraindicada
- Dihydroergotamine + Efavirenz Contraindicada
- Dihydroergotamine + Eletriptan Contraindicada
Perguntas frequentes
Can I take Dihydroergotamine with Isoniazid?
MediHelp rates the interaction as major. Dihydroergotamine and Isoniazid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Dihydroergotamine levels rise when CYP3A4 is inhibited, risking ergotism with severe peripheral vasospasm and ischemia. Isoniazid is a weaker CYP3A4 inhibitor than agents named in the labeling contraindication, but the toxicity is serious.
How serious is the interaction between Dihydroergotamine and Isoniazid?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid if possible and choose an alternative migraine therapy during isoniazid treatment. If used, monitor for numbness, coldness, or pain in the extremities and stop at the first signs of ischemia.
What other medicines interact with Isoniazid?
MediHelp also lists interactions of Isoniazid with, for example, Bacillus calmette-guerin substrain tice, Benzhydrocodone / acetaminophen, Carbamazepine. The full list is on the Isoniazid page.
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