Can I take 12.5mg and Amlodopine together?
Drug interaction guide
Originally published 25 Jan 2026
Meets Patient’s editorial guidelines
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Taking sildenafil (Viagra) and amlodipine together can cause your blood pressure to drop lower than intended. This might make you feel dizzy, lightheaded, faint, or give you a headache.
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Why this happens
Both medicines work by relaxing and widening your blood vessels to improve blood flow. When used at the same time, their effects add together, which can lead to an extra reduction in blood pressure.
What you should do
You can usually take these together, but you should be cautious. Start with the lowest possible dose of sildenafil (which you are doing at 12.5mg). Stand up slowly from a sitting or lying position to avoid dizziness. If you feel very dizzy or faint, sit or lie down immediately and contact your doctor.
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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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