Interações medicamentosas
Amobarbital + Warfarin
Gravidade: Grave
Amobarbital and Warfarin: major interaction.
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Resumo
Barbiturates induce hepatic enzymes and accelerate warfarin metabolism, lowering INR and reducing anticoagulant protection. The effect develops over weeks and persists after the barbiturate is stopped, with risk of rebound overanticoagulation.
O que esta interação significa em palavras simples
Amobarbital and Warfarin 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.
Amobarbital belongs to Central Nervous System; Warfarin belongs to Cardiovascular.
Por que acontece
Induction of hepatic CYP enzymes (including CYP2C9 and CYP3A4) increasing warfarin clearance.
O que fazer
Monitor INR frequently and increase the warfarin dose as required. Reduce the dose and recheck INR when the barbiturate is discontinued.
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 Warfarin
- Defibrotide + Warfarin Contraindicada
- Ketorolac + Warfarin Contraindicada
- Abciximab + Warfarin Grave
- Acetylsalicylic acid + Warfarin Grave
- Adagrasib + Warfarin Grave
- Amiodarone + Warfarin Grave
Outras interações de Amobarbital
- Amobarbital + Calcium / magnesium / potassium / sodium oxybates Contraindicada
- Amobarbital + Doravirine Contraindicada
- Amobarbital + Elbasvir / grazoprevir Contraindicada
- Amobarbital + Isavuconazonium Contraindicada
- Amobarbital + Isocarboxazid Contraindicada
- Amobarbital + Lonafarnib Contraindicada
Perguntas frequentes
Can I take Amobarbital with Warfarin?
MediHelp rates the interaction as major. Amobarbital and Warfarin 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. Barbiturates induce hepatic enzymes and accelerate warfarin metabolism, lowering INR and reducing anticoagulant protection. The effect develops over weeks and persists after the barbiturate is stopped, with risk of rebound overanticoagulation.
How serious is the interaction between Amobarbital and Warfarin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor INR frequently and increase the warfarin dose as required. Reduce the dose and recheck INR when the barbiturate is discontinued.
What other medicines interact with Warfarin?
MediHelp also lists interactions of Warfarin with, for example, Defibrotide, Ketorolac, Abciximab. The full list is on the Warfarin page.
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