Can I take Telxtra and Tenrid at together?
Drug interaction guide
Originally published 14 Mar 2026
Meets Patient’s editorial guidelines
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Taking these two medicines together can cause your blood pressure to drop too low (hypotension). You may also experience a very slow heart rate or feel excessively tired, dizzy, or faint. There is also an increased risk of your kidneys not working as well as they should or your blood potassium levels becoming too high.
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Why this happens
Both medicines work to lower blood pressure but in different ways. Telxtra (telmisartan) relaxes blood vessels, while Tenrid AT (atenolol) slows the heart rate. When used together, their effects add up, which can sometimes lower blood pressure or heart rate more than intended.
What you should do
Back to contentsYou should only take these two medicines together if they have been specifically prescribed by your doctor. Your doctor may want to monitor your blood pressure, heart rate, and kidney function more closely, especially when you first start the combination or if your dose is changed. If you feel dizzy, lightheaded, or notice a very slow pulse, contact your doctor.
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Using other medicines
Back to contentsTaking 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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Taking evening primrose oil and melatonin together may increase the risk of feeling excessively drowsy or sleepy. There is also a theoretical risk that evening primrose oil could lower the 'seizure threshold', meaning it might make seizures more likely in people who are already prone to them. Since melatonin can also affect sleep-wake cycles and brain activity, combining them requires a bit of caution.
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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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