Drug interactions
Potassium chloride + Tolvaptan
Severity: Moderate
Potassium chloride and Tolvaptan: 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
Tolvaptan can modestly raise serum potassium and potassium chloride adds a direct potassium load. The combination may lead to hyperkalemia, especially in patients with reduced renal function.
What this interaction means in plain words
Potassium chloride and Tolvaptan 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.
Potassium chloride belongs to Gastrointestinal Tract; Tolvaptan belongs to Endocrine.
Why it happens
Additive increase in serum potassium from supplementation and tolvaptan.
What to do
Monitor serum potassium regularly and adjust or discontinue potassium chloride if hyperkalemia develops.
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 Tolvaptan
- Atazanavir + Tolvaptan Contraindicated
- Ceritinib + Tolvaptan Contraindicated
- Cobicistat + Tolvaptan Contraindicated
- Conivaptan + Tolvaptan Contraindicated
- Darunavir + Tolvaptan Contraindicated
- Idelalisib + Tolvaptan Contraindicated
Other interactions of Potassium chloride
Frequently asked questions
Can I take Potassium chloride with Tolvaptan?
MediHelp rates the interaction as moderate. Potassium chloride and Tolvaptan 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. Tolvaptan can modestly raise serum potassium and potassium chloride adds a direct potassium load. The combination may lead to hyperkalemia, especially in patients with reduced renal function.
How serious is the interaction between Potassium chloride and Tolvaptan?
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 serum potassium regularly and adjust or discontinue potassium chloride if hyperkalemia develops.
What other medicines interact with Tolvaptan?
MediHelp also lists interactions of Tolvaptan with, for example, Atazanavir, Ceritinib, Cobicistat. The full list is on the Tolvaptan page.
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