MedicinePOMEssential

Metoprolol

A beta blocker used to treat high blood pressure and heart problems, and to prevent migraine.

Clinical information

Common uses

high blood pressure
irregular heartbeat (arrhythmia)
preventing angina chest pain and migraines
too much thyroid hormone (thyrotoxicosis)

Common side effects

headaches
feeling tired, dizzy or weak
cold hands or feet
feeling or being sick
stomach pain

Cautions

do not stop taking it suddenly
tell your doctor before surgery — anaesthetics can drop blood pressure too far
may not suit people with severe asthma, slow heart rate or low blood pressure
alcohol can increase dizziness

Interactions

other blood pressure medicines
antidepressants, nitrates, baclofen or tamsulosin (can lower blood pressure)
NSAIDs like ibuprofen (can stop it working)
diabetes medicines (masks low blood sugar warning signs)
allergy medicines like adrenaline or ephedrine

Pregnancy: can be taken — extra baby growth scans usually needed

Reference information, not medical advice — always follow your doctor or pharmacist. Source: NHS Medicines A–Z, nhs.uk/medicines/metoprolol (accessed 2026-08-16)

Approved brands & formulations10

Brand name	Dosage form	Strength	Importer	Category
Betaloc	Parenteral ( Injection )	1mg/ml	authorized medicine importers	POM
Betaloc ZOK	Tablet ( Prolonged release )	100mg	State Trading Organization Plc	POM
Betaloc ZOK	Tablet ( Prolonged release )	50mg	State Trading Organization Plc	POM
Betaloc ZOK	Tablet ( Prolonged release )	25mg	State Trading Organization Plc	POM
Metapro - XL	Tablet	50 mg	authorized medicine importers	POM
Metoprolol	Parenteral ( Injection )	5mg	MFDA designated importers with Pre Authorization approval before import	hospital
Metoprolol	Parenteral ( Injection )	1mg/ml	—	POM
Metoprolol Succinate Extended-Release	Tablet ( Film coated - ER )	25mg	State Trading Organization Plc	POM
Metoprolol Succinate Extended-Release Tablets USP	Tablet	47.5mg (50mg)	State Trading Organization Plc	POM
Metoprolol Usp	Tablet	50 mg	—	POM