Atenolol
HeartAlso known as Tenormin
Atenolol is a beta blocker for high blood pressure and chest pain, and it's often prescribed after a heart attack. It blocks adrenaline's effect on your heart, so it beats slower and with less force — which means it needs less oxygen and puts less strain on your blood vessels. Feeling a little tired or sluggish at first is common and usually settles.
How to take it
When
Once a day, at the same time each day.
Food
Works with or without food — take it however suits you, just be consistent.
Avoid
Don't stop suddenly. Missing several doses in a row can trigger chest pain or worse. Refill early and taper only with your doctor.
Good to know
If you have diabetes, atenolol can hide the racing heart that warns you your blood sugar is low.
Missed a dose?
Take it as soon as you remember, unless it's close to your next dose — then skip the missed one. Never double up.
Common side effects
- Tiredness
- Cold hands and feet
- Dizziness or lightheadedness
- Slow heartbeat
- Feeling down or low
Call a doctor if
- A very slow heartbeat or fainting — get help now
- Chest pain, especially after missed doses — get help now
- Wheezing or trouble breathing
- Sudden weight gain or swelling in your legs — call your doctor right away