Can I take Amlodipine and Amitriptyline together?
Drug interaction guide
Originally published 25 Jan 2026
Meets Patient’s editorial guidelines
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Taking amlodipine and amitriptyline together can cause your blood pressure to drop lower than intended. This may make you feel dizzy, lightheaded, or faint, especially when standing up quickly from a sitting or lying position. There is also a small risk that both medications could affect your heart rhythm.
You can generally take amlodipine and amitriptyline together, but with some precautions.
Taking them together can cause your blood pressure to drop lower than intended, so monitor for dizziness, lightheadedness, or fainting.
Amitriptyline can also affect heart rhythm in higher doses, which may be a concern if you have heart issues.
Always let your doctor know all medications you take so they can monitor for interactions or adjust doses if needed.
How to take amlodipine and amitriptyline safely
Move slowly when changing positions (like getting out of bed) to avoid dizziness.
If you feel very dizzy, have a racing heartbeat, or faint, contact your doctor.
Your doctor may want to monitor your blood pressure more closely when you first start this combination.
Important precautions
Suicidal thoughts and mood changes
Amitriptyline can increase the risk of suicidal thoughts or self-harm, particularly when first starting treatment or changing doses. Seek immediate medical help if your mood changes or you feel depressed.
Heart conditions (e.g. recent heart attack, arrhythmia)
Do not take amitriptyline if you have recently had a heart attack or have certain heart rhythm problems, as it can affect the electrical signals in your heart.
Severe liver disease
If you have severe liver problems, your dose may need to be much lower and increased very slowly, as amlodipine is processed by the liver and can build up to toxic levels.
Food and drink warnings
Alcohol
Drinking alcohol while taking amitriptyline can make you feel very sleepy and unsteady on your feet. It is best to avoid alcohol, especially when you first start treatment or if your dose is increased.
Grapefruit juice
Grapefruit and grapefruit juice can increase the amount of amlodipine in your body, which may cause your blood pressure to drop too low. This can lead to side effects like headaches, dizziness, or swelling. Avoid consuming large amounts of grapefruit while taking this medicine.
Caffeine (coffee, tea, energy drinks)
Amitriptyline can sometimes increase the effects of caffeine, making you feel jittery or causing heart palpitations. Conversely, high amounts of caffeine may interfere with the sedative effects of the medicine. Try to keep your caffeine intake moderate.
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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