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Drug interactions

Buprenorphine long-acting + Vigabatrin

Severity: Moderate

Buprenorphine long-acting and Vigabatrin: moderate interaction.

Last updated

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

Vigabatrin causes somnolence in many patients, and long-acting injectable buprenorphine adds opioid-related sedation and a risk of respiratory depression. Because the injectable depot cannot be quickly withdrawn, additive effects may be prolonged.

What this interaction means in plain words

Buprenorphine long-acting and Vigabatrin 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

Additive central nervous system depression through pharmacodynamic effects.

What to do

Monitor for sedation and respiratory depression after injection and with any change in vigabatrin dose. Counsel the patient on avoiding driving until the combined effect is known.

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 Buprenorphine long-acting with Vigabatrin?

MediHelp rates the interaction as moderate. Buprenorphine long-acting and Vigabatrin 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. Vigabatrin causes somnolence in many patients, and long-acting injectable buprenorphine adds opioid-related sedation and a risk of respiratory depression. Because the injectable depot cannot be quickly withdrawn, additive effects may be prolonged.

How serious is the interaction between Buprenorphine long-acting and Vigabatrin?

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 sedation and respiratory depression after injection and with any change in vigabatrin dose. Counsel the patient on avoiding driving until the combined effect is known.

What other medicines interact with Vigabatrin?

MediHelp also lists interactions of Vigabatrin with, for example, Amisulpride, Asenapine transdermal, Asenapine. The full list is on the Vigabatrin page.

Full monographs, dosing and an interaction checker in the MediHelp app

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