Drug interactions
Mannitol + Nitroglycerin rectal
Severity: Minor
Mannitol and Nitroglycerin rectal: 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
Intravenous mannitol shifts fluid and can cause volume changes, while rectal nitroglycerin dilates blood vessels, so blood pressure may fall further when both are used. The effect is generally modest and mostly relevant in volume-depleted patients.
What this interaction means in plain words
Mannitol and Nitroglycerin rectal 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
Additive hypotensive effects from nitrate vasodilation and osmotic diuresis-related volume shifts.
What to do
Monitor blood pressure and volume status during mannitol infusion in patients receiving nitrates, and correct hypovolemia.
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 Mannitol
Frequently asked questions
Can I take Mannitol with Nitroglycerin rectal?
MediHelp rates the interaction as minor. Mannitol and Nitroglycerin rectal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Intravenous mannitol shifts fluid and can cause volume changes, while rectal nitroglycerin dilates blood vessels, so blood pressure may fall further when both are used. The effect is generally modest and mostly relevant in volume-depleted patients.
How serious is the interaction between Mannitol and Nitroglycerin rectal?
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 blood pressure and volume status during mannitol infusion in patients receiving nitrates, and correct hypovolemia.
What other medicines interact with Mannitol?
MediHelp also lists interactions of Mannitol with, for example, Dexamethasone-tobramycin, Tobramycin, Dichlorphenamide. The full list is on the Mannitol page.
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