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Drug interactions

Clozapine + Midodrine

Severity: Minor

Clozapine and Midodrine: minor 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

Midodrine is an alpha-1 agonist that can counteract clozapine-induced orthostatic hypotension, and the sedation concern in the legacy entry is not established. Combined use may raise blood pressure unpredictably and cause supine hypertension or reflex bradycardia.

What this interaction means in plain words

Clozapine and Midodrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Clozapine belongs to Central Nervous System; Midodrine belongs to Miscellaneous.

Evidence level: Low

Why it happens

Opposing effects at alpha-1 adrenergic receptors (clozapine blocks, midodrine activates).

What to do

Monitor supine and standing blood pressure, and avoid dosing midodrine near bedtime.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Clozapine with Midodrine?

MediHelp rates the interaction as minor. Clozapine and Midodrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Midodrine is an alpha-1 agonist that can counteract clozapine-induced orthostatic hypotension, and the sedation concern in the legacy entry is not established. Combined use may raise blood pressure unpredictably and cause supine hypertension or reflex bradycardia.

How serious is the interaction between Clozapine and Midodrine?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor supine and standing blood pressure, and avoid dosing midodrine near bedtime.

What other medicines interact with Clozapine?

MediHelp also lists interactions of Clozapine with, for example, Deferiprone, Irinotecan, Pimozide. The full list is on the Clozapine page.

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

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