Can I take Doxadura and Garlic supplements together?
Drug interaction guide
Originally published 25 Jan 2026
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Taking garlic supplements alongside Doxadura (doxazosin) may cause your blood pressure to drop lower than intended. This can lead to symptoms such as feeling dizzy, lightheaded, or faint, especially when you stand up quickly from a sitting or lying position.
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Why this happens
Doxadura is an alpha-blocker used to lower blood pressure and treat prostate issues. Garlic supplements have natural blood-pressure-lowering properties. When used together, their effects can add up (an additive effect), causing an excessive drop in blood pressure.
What you should do
Use caution when combining these two. If you decide to take garlic supplements, monitor your blood pressure regularly. Be careful when standing up quickly. If you feel very dizzy or faint, stop the supplement and speak to your GP or pharmacist. It is best to inform your doctor before starting any new herbal supplements while on blood pressure medication.
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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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