Can I take Doxazosin and Strivit d3 together?
Drug interaction guide
Originally published 25 Jan 2026
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There is no known direct interaction between doxazosin and Strivit D3 (Vitamin D3). It is generally safe to take these two medications together.
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Why this happens
Doxazosin is an alpha-blocker used for high blood pressure or prostate issues, while Strivit D3 is a vitamin supplement. They are processed by different pathways in the body and do not interfere with how the other works.
What you should do
You can continue taking both medications as prescribed. As with any blood pressure medication, it is always a good idea to stand up slowly from a sitting or lying position to avoid dizziness, but this is a side effect of the doxazosin itself rather than an interaction with the vitamin.
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Using other medicines
Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.
Disclaimer
This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.
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Article history
The information on this page is written and peer reviewed by qualified clinicians.
25 Jan 2026 | Originally published

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