Drug interactions
Doxylamine + Ziconotide
Severity: Moderate
Doxylamine and Ziconotide: 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
Ziconotide given intrathecally commonly causes dizziness, drowsiness, confusion and other cognitive effects. Adding a sedating antihistamine such as doxylamine may worsen CNS depression and impair mental status.
What this interaction means in plain words
Doxylamine and Ziconotide 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.
Doxylamine belongs to Respiratory; Ziconotide belongs to Central Nervous System.
Why it happens
Additive CNS depressant effects; ziconotide blocks N-type calcium channels while doxylamine blocks H1 receptors.
What to do
Monitor for worsening sedation and cognitive or mood changes, and reduce or stop doxylamine if they develop. Follow the ziconotide label for dose reduction or interruption if neurological signs occur.
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 Doxylamine
Other interactions of Ziconotide
- Clozapine + Ziconotide Major
- Alprazolam + Ziconotide Moderate
- Amitriptyline + Ziconotide Moderate
- Amobarbital + Ziconotide Moderate
- Aripiprazole + Ziconotide Moderate
- Armodafinil + Ziconotide Moderate
Frequently asked questions
Can I take Doxylamine with Ziconotide?
MediHelp rates the interaction as moderate. Doxylamine and Ziconotide 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. Ziconotide given intrathecally commonly causes dizziness, drowsiness, confusion and other cognitive effects. Adding a sedating antihistamine such as doxylamine may worsen CNS depression and impair mental status.
How serious is the interaction between Doxylamine and Ziconotide?
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 worsening sedation and cognitive or mood changes, and reduce or stop doxylamine if they develop. Follow the ziconotide label for dose reduction or interruption if neurological signs occur.
What other medicines interact with Doxylamine?
MediHelp also lists interactions of Doxylamine with, for example, Belladonna and opium, Benzhydrocodone / acetaminophen, Brexanolone. The full list is on the Doxylamine page.
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