Drug interactions
Doxycycline + Rapacuronium
Severity: Moderate
Doxycycline and Rapacuronium: 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
Tetracyclines have weak neuromuscular blocking effects and may potentiate non-depolarizing blockers, prolonging paralysis. Rapacuronium has been withdrawn from the market in many regions.
What this interaction means in plain words
Doxycycline and Rapacuronium 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
Additive weak neuromuscular blockade at the neuromuscular junction.
What to do
Monitor neuromuscular function with train-of-four and be prepared for prolonged ventilatory support if used perioperatively.
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 Doxycycline
- Acitretin + Doxycycline Contraindicated
- Aminolevulinic acid + Doxycycline Major
- Cholera vaccine + Doxycycline Major
- Doxycycline + Isotretinoin Major
- Doxycycline + Methoxyflurane Major
- Doxycycline + Microbiota Major
Frequently asked questions
Can I take Doxycycline with Rapacuronium?
MediHelp rates the interaction as moderate. Doxycycline and Rapacuronium 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. Tetracyclines have weak neuromuscular blocking effects and may potentiate non-depolarizing blockers, prolonging paralysis. Rapacuronium has been withdrawn from the market in many regions.
How serious is the interaction between Doxycycline and Rapacuronium?
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 neuromuscular function with train-of-four and be prepared for prolonged ventilatory support if used perioperatively.
What other medicines interact with Doxycycline?
MediHelp also lists interactions of Doxycycline with, for example, Acitretin, Aminolevulinic acid, Cholera vaccine. The full list is on the Doxycycline page.
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