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Drug interactions

Rapacuronium + Tetracycline

Severity: Moderate

Rapacuronium and Tetracycline: 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 may potentiate neuromuscular blockade from non-depolarizing muscle relaxants, leading to prolonged paralysis or respiratory depression. Rapacuronium has been withdrawn from many markets, but the principle applies to other agents.

What this interaction means in plain words

Rapacuronium and Tetracycline 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.

Evidence level: Low

Why it happens

Additive neuromuscular blockade, possibly via presynaptic effects and calcium chelation.

What to do

Monitor neuromuscular function with a peripheral nerve stimulator and be prepared to provide prolonged ventilatory support. Reduce the dose of the neuromuscular blocker if needed.

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?

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 Rapacuronium with Tetracycline?

MediHelp rates the interaction as moderate. Rapacuronium and Tetracycline 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 may potentiate neuromuscular blockade from non-depolarizing muscle relaxants, leading to prolonged paralysis or respiratory depression. Rapacuronium has been withdrawn from many markets, but the principle applies to other agents.

How serious is the interaction between Rapacuronium and Tetracycline?

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 a peripheral nerve stimulator and be prepared to provide prolonged ventilatory support. Reduce the dose of the neuromuscular blocker if needed.

What other medicines interact with Tetracycline?

MediHelp also lists interactions of Tetracycline with, for example, Acitretin, Methoxyflurane, Isotretinoin. The full list is on the Tetracycline page.

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