Drug interactions
Amlodipine-atorvastatin + Doxazosin
Severity: Moderate
Amlodipine-atorvastatin and Doxazosin: 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
Doxazosin and amlodipine have additive blood pressure lowering effects. Orthostatic hypotension, dizziness and syncope can occur, especially after the first dose.
What this interaction means in plain words
Amlodipine-atorvastatin and Doxazosin 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-atorvastatin belongs to Cardiovascular; Doxazosin belongs to Genitourinary.
Why it happens
Additive vasodilation from alpha-1 blockade and calcium channel blockade.
What to do
Start doxazosin at a low dose, preferably at bedtime, and monitor standing blood pressure.
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-atorvastatin
Other interactions of Doxazosin
- Alfuzosin + Doxazosin Major
- Amifostine + Doxazosin Major
- Avanafil + Doxazosin Major
- Doxazosin + Dutasteride-tamsulosin Major
- Doxazosin + Phentolamine Major
- Doxazosin + Prazosin Major
Frequently asked questions
Can I take Amlodipine-atorvastatin with Doxazosin?
MediHelp rates the interaction as moderate. Amlodipine-atorvastatin and Doxazosin 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. Doxazosin and amlodipine have additive blood pressure lowering effects. Orthostatic hypotension, dizziness and syncope can occur, especially after the first dose.
How serious is the interaction between Amlodipine-atorvastatin and Doxazosin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start doxazosin at a low dose, preferably at bedtime, and monitor standing blood pressure.
What other medicines interact with Amlodipine-atorvastatin?
MediHelp also lists interactions of Amlodipine-atorvastatin with, for example, Amifostine, Apalutamide, Atazanavir. The full list is on the Amlodipine-atorvastatin page.
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