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Can I take 2.5mg and Felodipine together?

Drug interaction guide

Taking sildenafil (Viagra) and felodipine together can cause your blood pressure to drop too low. This may make you feel dizzy, lightheaded, faint, or cause a headache or a fast heartbeat.

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Why this happens

Both medicines work by widening your blood vessels to lower blood pressure or improve blood flow. When used at the same time, their effects add together, which can lead to an excessive drop in blood pressure.

Use this combination with caution. If your doctor has prescribed both, start with the lowest possible dose of sildenafil. You should get 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. Avoid drinking alcohol, as this will make the blood pressure drop even worse.

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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.

  • 14 Mar 2026 | Originally published
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