Drug interactions
Telmisartan-amlodipine + Tolvaptan
Severity: Moderate
Telmisartan-amlodipine 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 may cause modest increases in serum potassium, which could add to the hyperkalemic effect of telmisartan. The combination can also add to volume depletion and hypotension.
What this interaction means in plain words
Telmisartan-amlodipine 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.
Telmisartan-amlodipine belongs to Cardiovascular; Tolvaptan belongs to Endocrine.
Why it happens
Telmisartan reduces renal potassium excretion through aldosterone blockade while tolvaptan-induced aquaresis may add to volume depletion and potassium shifts.
What to do
Monitor serum potassium, renal function and blood pressure, particularly at tolvaptan initiation and dose changes.
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 Telmisartan-amlodipine
- Aliskiren + Telmisartan-amlodipine Contraindicated
- Sparsentan + Telmisartan-amlodipine Contraindicated
- Amifostine + Telmisartan-amlodipine Major
- Amiloride + Telmisartan-amlodipine Major
- Benazepril + Telmisartan-amlodipine Major
- Candesartan + Telmisartan-amlodipine Major
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 Telmisartan-amlodipine with Tolvaptan?
MediHelp rates the interaction as moderate. Telmisartan-amlodipine 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 may cause modest increases in serum potassium, which could add to the hyperkalemic effect of telmisartan. The combination can also add to volume depletion and hypotension.
How serious is the interaction between Telmisartan-amlodipine 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, renal function and blood pressure, particularly at tolvaptan initiation and dose changes.
What other medicines interact with Telmisartan-amlodipine?
MediHelp also lists interactions of Telmisartan-amlodipine with, for example, Aliskiren, Sparsentan, Amifostine. The full list is on the Telmisartan-amlodipine page.
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