Drug interactions
Metoclopramide intranasal + Zonisamide
Severity: Moderate
Metoclopramide intranasal and Zonisamide: 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
Metoclopramide has central dopamine-blocking effects and can cause drowsiness, dizziness and extrapyramidal symptoms. Combined with zonisamide, CNS adverse effects may be additive, and metoclopramide may lower seizure threshold in patients with epilepsy.
What this interaction means in plain words
Metoclopramide intranasal and Zonisamide 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 central nervous system effects; metoclopramide may also lower seizure threshold, with no established pharmacokinetic mechanism.
What to do
Monitor for sedation, movement disorders and any change in seizure frequency. Use the lowest effective metoclopramide dose for the shortest time.
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 Zonisamide
- Zonisamide + Zuranolone Major
- Acetazolamide + Zonisamide Moderate
- Amisulpride + Zonisamide Moderate
- Amobarbital + Zonisamide Moderate
- Apalutamide + Zonisamide Moderate
- Asenapine transdermal + Zonisamide Moderate
Frequently asked questions
Can I take Metoclopramide intranasal with Zonisamide?
MediHelp rates the interaction as moderate. Metoclopramide intranasal and Zonisamide 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. Metoclopramide has central dopamine-blocking effects and can cause drowsiness, dizziness and extrapyramidal symptoms. Combined with zonisamide, CNS adverse effects may be additive, and metoclopramide may lower seizure threshold in patients with epilepsy.
How serious is the interaction between Metoclopramide intranasal and Zonisamide?
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, movement disorders and any change in seizure frequency. Use the lowest effective metoclopramide dose for the shortest time.
What other medicines interact with Zonisamide?
MediHelp also lists interactions of Zonisamide with, for example, Zuranolone, Acetazolamide, Amisulpride. The full list is on the Zonisamide page.
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