Drug interactions
Amlodipine-hydrochlorothiazide-valsartan + Toremifene
Severity: Moderate
Amlodipine-hydrochlorothiazide-valsartan and Toremifene: 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
Toremifene can cause hypercalcemia, particularly in patients with bone metastases, and thiazides reduce urinary calcium excretion. The combination may increase hypercalcemia risk. Toremifene also prolongs QT, and thiazide-induced hypokalemia or hypomagnesemia could worsen that risk.
What this interaction means in plain words
Amlodipine-hydrochlorothiazide-valsartan and Toremifene 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.
Amlodipine-hydrochlorothiazide-valsartan belongs to Cardiovascular; Toremifene belongs to Endocrine.
Why it happens
Thiazide-reduced renal calcium excretion adds to toremifene-associated hypercalcemia; electrolyte loss raises QT risk.
What to do
Monitor serum calcium, potassium and magnesium, and correct deficits. Consider a non-thiazide antihypertensive if hypercalcemia occurs.
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 Amlodipine-hydrochlorothiazide-valsartan
- Aliskiren + Amlodipine-hydrochlorothiazide-valsartan Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Dofetilide Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Sparsentan Contraindicated
- Aceclofenac + Amlodipine-hydrochlorothiazide-valsartan Major
- Aldesleukin + Amlodipine-hydrochlorothiazide-valsartan Major
- Amifostine + Amlodipine-hydrochlorothiazide-valsartan Major
Other interactions of Toremifene
- Amiodarone + Toremifene Contraindicated
- Dronedarone + Toremifene Contraindicated
- Nilotinib + Toremifene Contraindicated
- Pimozide + Toremifene Contraindicated
- Quinidine + Toremifene Contraindicated
- Ribociclib + Toremifene Contraindicated
Frequently asked questions
Can I take Amlodipine-hydrochlorothiazide-valsartan with Toremifene?
MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan and Toremifene 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. Toremifene can cause hypercalcemia, particularly in patients with bone metastases, and thiazides reduce urinary calcium excretion. The combination may increase hypercalcemia risk. Toremifene also prolongs QT, and thiazide-induced hypokalemia or hypomagnesemia could worsen that risk.
How serious is the interaction between Amlodipine-hydrochlorothiazide-valsartan and Toremifene?
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 calcium, potassium and magnesium, and correct deficits. Consider a non-thiazide antihypertensive if hypercalcemia occurs.
What other medicines interact with Amlodipine-hydrochlorothiazide-valsartan?
MediHelp also lists interactions of Amlodipine-hydrochlorothiazide-valsartan with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Amlodipine-hydrochlorothiazide-valsartan page.
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