Drug interactions
Letibotulinumtoxina + Tobramycin
Severity: Moderate
Letibotulinumtoxina and Tobramycin: 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
Aminoglycosides such as tobramycin can impair neuromuscular transmission and may amplify the effect of botulinum toxins. This can produce excessive muscle weakness, including swallowing and breathing difficulty, particularly with systemic aminoglycoside use.
What this interaction means in plain words
Letibotulinumtoxina and Tobramycin 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 pharmacodynamic impairment of neuromuscular transmission, with aminoglycosides reducing presynaptic acetylcholine release on top of toxin-mediated blockade.
What to do
Avoid starting systemic tobramycin around the time of botulinum toxin treatment when alternatives exist. If both are required, monitor for excessive weakness, dysphagia and respiratory compromise.
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 Tobramycin
- Cidofovir + Tobramycin Contraindicated
- Adefovir + Tobramycin Major
- Amikacin + Tobramycin Major
- Amphotericin b deoxycholate + Tobramycin Major
- Amphotericin b + Tobramycin Major
- Atracurium + Tobramycin Major
Frequently asked questions
Can I take Letibotulinumtoxina with Tobramycin?
MediHelp rates the interaction as moderate. Letibotulinumtoxina and Tobramycin 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. Aminoglycosides such as tobramycin can impair neuromuscular transmission and may amplify the effect of botulinum toxins. This can produce excessive muscle weakness, including swallowing and breathing difficulty, particularly with systemic aminoglycoside use.
How serious is the interaction between Letibotulinumtoxina and Tobramycin?
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 starting systemic tobramycin around the time of botulinum toxin treatment when alternatives exist. If both are required, monitor for excessive weakness, dysphagia and respiratory compromise.
What other medicines interact with Tobramycin?
MediHelp also lists interactions of Tobramycin with, for example, Cidofovir, Adefovir, Amikacin. The full list is on the Tobramycin page.
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