Drug interactions
Azelastine + Topiramate
Severity: Moderate
Azelastine 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
Azelastine, particularly when used as a nasal spray, can cause drowsiness, and topiramate commonly causes somnolence and cognitive slowing. Using them together may increase sedation and impair alertness or psychomotor performance.
What this interaction means in plain words
Azelastine 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.
Azelastine belongs to Respiratory; Topiramate belongs to Central Nervous System.
Why it happens
Additive central nervous system depressant effects.
What to do
Counsel patients to avoid driving or hazardous tasks until the combined effect is known. Reduce azelastine use or choose a non-sedating antihistamine if excessive sedation occurs.
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 Azelastine
Other interactions of Topiramate
Frequently asked questions
Can I take Azelastine with Topiramate?
MediHelp rates the interaction as moderate. Azelastine 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. Azelastine, particularly when used as a nasal spray, can cause drowsiness, and topiramate commonly causes somnolence and cognitive slowing. Using them together may increase sedation and impair alertness or psychomotor performance.
How serious is the interaction between Azelastine 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: Counsel patients to avoid driving or hazardous tasks until the combined effect is known. Reduce azelastine use or choose a non-sedating antihistamine if excessive sedation occurs.
What other medicines interact with Azelastine?
MediHelp also lists interactions of Azelastine with, for example, Calcium / magnesium / potassium / sodium oxybates, Methadone, Sodium oxybate. The full list is on the Azelastine page.
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