Drug interactions
Sulfasalazine + Tolvaptan
Severity: Minor
Sulfasalazine and Tolvaptan: minor 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
No credible mechanism links sulfasalazine to a significant potassium rise with tolvaptan. Any interaction is not established and is unlikely to matter clinically.
What this interaction means in plain words
Sulfasalazine and Tolvaptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
No established mechanism for an interaction on potassium.
What to do
No specific action is needed. Check serum potassium as part of routine monitoring of tolvaptan therapy.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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
Frequently asked questions
Can I take Sulfasalazine with Tolvaptan?
MediHelp rates the interaction as minor. Sulfasalazine and Tolvaptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. No credible mechanism links sulfasalazine to a significant potassium rise with tolvaptan. Any interaction is not established and is unlikely to matter clinically.
How serious is the interaction between Sulfasalazine and Tolvaptan?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No specific action is needed. Check serum potassium as part of routine monitoring of tolvaptan therapy.
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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