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Drug interactions

Bupropion-naltrexone + Elvitegravir / cobicistat / emtricitabine / tenofovir df

Severity: Moderate

Bupropion-naltrexone and Elvitegravir / cobicistat / emtricitabine / tenofovir df: moderate interaction.

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For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Cobicistat is a CYP3A and CYP2D6 inhibitor, and this may alter bupropion and its metabolite exposure. Effects are poorly characterized but bupropion toxicity, including seizures, is a concern.

What this interaction means in plain words

Bupropion-naltrexone and Elvitegravir / cobicistat / emtricitabine / tenofovir df 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.

Evidence level: Low

Why it happens

Cobicistat inhibition of CYP2D6 and CYP3A may affect bupropion disposition; the exact mechanism is not established.

What to do

Monitor for bupropion adverse effects such as insomnia, agitation and seizures. Keep the bupropion dose as low as effective.

What to ask your pharmacist

  • 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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Frequently asked questions

Can I take Bupropion-naltrexone with Elvitegravir / cobicistat / emtricitabine / tenofovir df?

MediHelp rates the interaction as moderate. Bupropion-naltrexone and Elvitegravir / cobicistat / emtricitabine / tenofovir df 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. Cobicistat is a CYP3A and CYP2D6 inhibitor, and this may alter bupropion and its metabolite exposure. Effects are poorly characterized but bupropion toxicity, including seizures, is a concern.

How serious is the interaction between Bupropion-naltrexone and Elvitegravir / cobicistat / emtricitabine / tenofovir df?

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 for bupropion adverse effects such as insomnia, agitation and seizures. Keep the bupropion dose as low as effective.

What other medicines interact with Bupropion-naltrexone?

MediHelp also lists interactions of Bupropion-naltrexone with, for example, Hydrocodone, Hydromorphone, Isocarboxazid. The full list is on the Bupropion-naltrexone page.

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