Metoprolol
Metoprolol is a beta-1 blocker used for selected blood-pressure, angina and rhythm conditions. Listed uses include Hypertension and Angina Pectoris.
Key points
- Immediate- and modified-release products are not automatically interchangeable.
- It can slow heart rate and mask some low-glucose warning signs.
- Do not stop suddenly; fainting or severe breathlessness needs urgent care.
Select a listed product and pack to order online. Ask your doctor or pharmacist whether it suits you and what monitoring it needs.
Important safety checks
Heart rhythm, heart failure, asthma, diabetes, liver health and other rate-slowing medicines require review.
When to seek urgent care
Seek urgent help for fainting, severe wheeze, chest pain, confusion or a very slow or irregular heartbeat.
Further reading
What is metoprolol used for?
Metoprolol is a beta-1 blocker used for high blood pressure, angina and heart rhythm problems (arrhythmia), and after a heart attack.
How does metoprolol work?
Metoprolol selectively blocks beta-1 receptors in the heart, which reduces the heart's oxygen demand and the amount of blood it pumps out each minute.
Which products contain metoprolol?
Products containing metoprolol on SGMeds include Toprol, Beloc, Toprol XL and Lopressor. Compare their forms, strengths and pack sizes.
How long does metoprolol take to work?
Metoprolol starts to work within 1 to 2 hours, and its effect lasts about 24 hours.
What are the side effects of metoprolol?
Common side effects include fatigue and dizziness. Less common effects are a slow heart rate, cold hands and feet, and shortness of breath. Worsening heart failure and tightening of the airways (bronchospasm) are serious and need immediate medical attention.
Who should not take metoprolol?
It is not suitable for people with a very slow heart rate (severe bradycardia) or a problem with the heart's electrical signals (heart block). If you have heart failure, asthma, diabetes or liver problems, or take other medicines that slow the heart, ask a doctor or pharmacist before you use it.
What are other names for metoprolol?
In other countries, metoprolol is also sold as Betaloc, Lopresor and Betaloc SA. Brand names vary between countries, so compare products by their active ingredient.
What does metoprolol cost in Singapore dollars?
Each product on this page shows a price for each strength and pack size in Singapore dollars, converted from US dollars, so the exchange rate can change the final amount. Larger packs usually cost less per tablet.
Payment and prices →Do I need a prescription for metoprolol in Singapore?
No. SGMeds does not ask for a prescription to order metoprolol: we place the order with our pharmacy partner, which prepares it and arranges delivery on your behalf.
Ordering without a prescription →Can I buy metoprolol online in Singapore?
Yes, here on SGMeds: choose the product, strength and pack, then check out. We deliver to Singapore and Malaysia. Express shipping is tracked and takes up to 1 week, and Regular shipping takes up to 3 weeks.
How ordering works →Related articles

Compare beta blockers by receptor selectivity, indication, formulation and monitoring rather than assuming equal milligrams or a class-wide effect.
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