Drug interactions
Butabarbital + Topiramate
Severity: Moderate
Butabarbital and Topiramate: 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
Both drugs depress the central nervous system, so together they can cause marked drowsiness, psychomotor slowing and cognitive impairment. Barbiturates may also lower topiramate exposure through enzyme induction, which can reduce seizure control.
What this interaction means in plain words
Butabarbital and Topiramate 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.
Why it happens
Additive CNS depression; barbiturates may also induce hepatic enzymes that increase topiramate clearance.
What to do
Monitor for oversedation and cognitive effects and counsel against driving until the response is known. Watch seizure control if barbiturate therapy is started or stopped, and adjust the topiramate dose accordingly.
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?
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Other interactions of Topiramate
Frequently asked questions
Can I take Butabarbital with Topiramate?
MediHelp rates the interaction as moderate. Butabarbital and Topiramate 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. Both drugs depress the central nervous system, so together they can cause marked drowsiness, psychomotor slowing and cognitive impairment. Barbiturates may also lower topiramate exposure through enzyme induction, which can reduce seizure control.
How serious is the interaction between Butabarbital and Topiramate?
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 oversedation and cognitive effects and counsel against driving until the response is known. Watch seizure control if barbiturate therapy is started or stopped, and adjust the topiramate dose accordingly.
What other medicines interact with Topiramate?
MediHelp also lists interactions of Topiramate with, for example, Benzhydrocodone / acetaminophen, Buprenorphine long-acting, Buprenorphine subdermal implant. The full list is on the Topiramate page.
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