Drug interactions
Sodium sulfate / ?magnesium sulfate / potassium chloride + Tobramycin
Severity: Moderate
Sodium sulfate / ?magnesium sulfate / potassium chloride 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
Osmotic bowel preparations can cause fluid loss and electrolyte disturbances. In patients receiving tobramycin, dehydration and electrolyte shifts may increase the risk of kidney injury and arrhythmia.
What this interaction means in plain words
Sodium sulfate / ?magnesium sulfate / potassium chloride 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
Volume depletion and electrolyte changes increase susceptibility to aminoglycoside nephrotoxicity.
What to do
Maintain hydration and check renal function and electrolytes before and after bowel preparation. Use caution in patients with renal impairment.
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 Sodium sulfate / ?magnesium sulfate / potassium chloride with Tobramycin?
MediHelp rates the interaction as moderate. Sodium sulfate / ?magnesium sulfate / potassium chloride 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. Osmotic bowel preparations can cause fluid loss and electrolyte disturbances. In patients receiving tobramycin, dehydration and electrolyte shifts may increase the risk of kidney injury and arrhythmia.
How serious is the interaction between Sodium sulfate / ?magnesium sulfate / potassium chloride 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: Maintain hydration and check renal function and electrolytes before and after bowel preparation. Use caution in patients with renal impairment.
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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