Drug interactions
Midazolam intranasal + Primaquine
Severity: Minor
Midazolam intranasal and Primaquine: 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
Midazolam is cleared by CYP3A4, and primaquine is a weak inhibitor, so midazolam exposure may rise slightly. This could prolong sedation or cause respiratory depression, though the effect is expected to be small.
What this interaction means in plain words
Midazolam intranasal and Primaquine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Possible weak CYP3A4 inhibition by primaquine reducing midazolam clearance.
What to do
Monitor sedation level and respiratory status after midazolam dosing. Reduce or space subsequent doses if prolonged sedation occurs.
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?
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Other interactions of Primaquine
- Pimozide + Primaquine Contraindicated
- Amiodarone + Primaquine Major
- Amisulpride + Primaquine Major
- Anagrelide + Primaquine Major
- Arsenic trioxide + Primaquine Major
- Asenapine + Primaquine Major
Frequently asked questions
Can I take Midazolam intranasal with Primaquine?
MediHelp rates the interaction as minor. Midazolam intranasal and Primaquine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Midazolam is cleared by CYP3A4, and primaquine is a weak inhibitor, so midazolam exposure may rise slightly. This could prolong sedation or cause respiratory depression, though the effect is expected to be small.
How serious is the interaction between Midazolam intranasal and Primaquine?
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 sedation level and respiratory status after midazolam dosing. Reduce or space subsequent doses if prolonged sedation occurs.
What other medicines interact with Primaquine?
MediHelp also lists interactions of Primaquine with, for example, Pimozide, Amiodarone, Amisulpride. The full list is on the Primaquine page.
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