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Drug interactions

Ganaxolone + Hydroxyzine

Severity: Moderate

Ganaxolone and Hydroxyzine: 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

Ganaxolone causes somnolence and sedation, and hydroxyzine is a sedating antihistamine. Together they may increase drowsiness and impair alertness and coordination.

What this interaction means in plain words

Ganaxolone and Hydroxyzine 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.

Ganaxolone belongs to Central Nervous System; Hydroxyzine belongs to Respiratory.

Evidence level: Moderate

Why it happens

Additive CNS depression via GABA-A modulation (ganaxolone) and H1 antagonism (hydroxyzine).

What to do

Monitor for excessive sedation and consider reducing the dose of one agent if drowsiness is problematic. Advise caregivers and patients to avoid hazardous activities until the response 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 Ganaxolone with Hydroxyzine?

MediHelp rates the interaction as moderate. Ganaxolone and Hydroxyzine 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. Ganaxolone causes somnolence and sedation, and hydroxyzine is a sedating antihistamine. Together they may increase drowsiness and impair alertness and coordination.

How serious is the interaction between Ganaxolone and Hydroxyzine?

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 excessive sedation and consider reducing the dose of one agent if drowsiness is problematic. Advise caregivers and patients to avoid hazardous activities until the response is known.

What other medicines interact with Hydroxyzine?

MediHelp also lists interactions of Hydroxyzine with, for example, Droperidol, Pimozide, Thioridazine. The full list is on the Hydroxyzine page.

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

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