Drug interactions
Maprotiline + Phenylephrine po
Severity: Moderate
Maprotiline and Phenylephrine po: 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
Oral phenylephrine is a direct alpha-agonist whose pressor effect can be enhanced by tricyclic-type antidepressants. This can lead to a greater rise in blood pressure and possible arrhythmia.
What this interaction means in plain words
Maprotiline and Phenylephrine po 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.
Why it happens
Maprotiline blocks norepinephrine reuptake, which sensitizes adrenergic receptors to sympathomimetic stimulation.
What to do
Avoid oral decongestants in patients with hypertension or heart disease, and use a non-sympathomimetic alternative. Monitor blood pressure if combined use is necessary.
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 Maprotiline
- Arsenic trioxide + Maprotiline Contraindicated
- Disopyramide + Maprotiline Contraindicated
- Dofetilide + Maprotiline Contraindicated
- Ibutilide + Maprotiline Contraindicated
- Isocarboxazid + Maprotiline Contraindicated
- Maprotiline + Methylene blue Contraindicated
Frequently asked questions
Can I take Maprotiline with Phenylephrine po?
MediHelp rates the interaction as moderate. Maprotiline and Phenylephrine po 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. Oral phenylephrine is a direct alpha-agonist whose pressor effect can be enhanced by tricyclic-type antidepressants. This can lead to a greater rise in blood pressure and possible arrhythmia.
How serious is the interaction between Maprotiline and Phenylephrine po?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid oral decongestants in patients with hypertension or heart disease, and use a non-sympathomimetic alternative. Monitor blood pressure if combined use is necessary.
What other medicines interact with Maprotiline?
MediHelp also lists interactions of Maprotiline with, for example, Arsenic trioxide, Disopyramide, Dofetilide. The full list is on the Maprotiline page.
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