About atenolol
Beta-blocker
Used for
- High blood pressure
- Angina (chest pain)
- Certain fast or irregular heart rhythms
Usual adult dose
Often 25–50 mg once daily for high blood pressure; doses vary by condition and kidney function.
Usual dose in children
Specialist-prescribed; doses depend on weight and condition.
Common side effects
- Tiredness or dizziness
- Slow heartbeat
- Cold hands or feet
- Nausea or diarrhea
Important warnings
- Can worsen asthma or some circulation problems.
- Do not stop suddenly; chest pain or heart problems may worsen.
- May mask warning signs of low blood sugar.
- Dose adjustment may be needed with kidney impairment.
Pregnancy
May affect fetal growth; use only when the expected benefit outweighs potential risk.
Breastfeeding
Small amounts enter breast milk; infant monitoring may be needed, especially in newborns.
Interactions
- Other blood-pressure medicines may increase dizziness or low blood pressure.
- Verapamil or diltiazem can further slow the heartbeat.
- Insulin and diabetes medicines: atenolol may mask low blood sugar signs.
- Some anti-inflammatory painkillers may reduce blood-pressure control.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.