Drug interactions
Amlodipine-hydrochlorothiazide-valsartan + Terazosin
Severity: Moderate
Amlodipine-hydrochlorothiazide-valsartan and Terazosin: 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
Terazosin is an alpha-1 blocker that causes first-dose and orthostatic hypotension. Added to amlodipine, valsartan, and hydrochlorothiazide, the blood pressure lowering is additive and may cause dizziness or syncope.
What this interaction means in plain words
Amlodipine-hydrochlorothiazide-valsartan and Terazosin 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; Terazosin belongs to Genitourinary.
Why it happens
Additive vasodilatory antihypertensive effects.
What to do
Give the first terazosin dose at bedtime at a low dose and titrate slowly. Monitor standing blood pressure and reduce other antihypertensives if symptomatic.
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 Terazosin
- Alfuzosin + Terazosin Major
- Amifostine + Terazosin Major
- Avanafil + Terazosin Major
- Doxazosin + Terazosin Major
- Dutasteride-tamsulosin + Terazosin Major
- Lofexidine + Terazosin Major
Frequently asked questions
Can I take Amlodipine-hydrochlorothiazide-valsartan with Terazosin?
MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan and Terazosin 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. Terazosin is an alpha-1 blocker that causes first-dose and orthostatic hypotension. Added to amlodipine, valsartan, and hydrochlorothiazide, the blood pressure lowering is additive and may cause dizziness or syncope.
How serious is the interaction between Amlodipine-hydrochlorothiazide-valsartan and Terazosin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give the first terazosin dose at bedtime at a low dose and titrate slowly. Monitor standing blood pressure and reduce other antihypertensives if symptomatic.
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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