What is Inderal?

Inderal is a brand product that contains Propranolol, which belongs to a class of antiarrhythmics known as beta-blockers. It works by slowing down the activity of your heart to reduce blood pressure. It also makes your heart work less hard to treat heart conditions like irregular heartbeat, heart failure, heart attack and angina. It also is used in preventing migraine and anxiety.

How to use it?

Inderal is available as tablets.

For high blood pressure, the starting dose is 80mg twice daily. The dose can be increased at weekly intervals depending on the response. The maintenance dose is 160-320mg daily. 

For angina, the starting dose is 40mg 2-3 times daily. The maintenance dose is 120-240mg daily. 

For treating anxiety symptoms, the starting dose is 40mg daily, the maximum daily dose is 120mg.

For prevention after a heart attack, the starting dose is 40mg 4 times a day for 2-3 days, followed by 80mg twice daily. Treatment should be started 5-21 days after a heart attack.

For prevention of migraine, the starting dose is 80-240mg daily in divided doses. 

For irregular heartbeat, take 10-40mg 3-4 times a day.

What are the side effects of Inderal?

Common side effects of Inderal include slow heartbeat, oedema, dizziness, shortness of breath, erectile dysfunction, fatigue, headache, and low blood glucose.

Who should not take Inderal?

  • People who are allergic to any component of Inderal or any beta-blockers
  • Patients with asthma 
  • Patients with certain heart conditions like cardiogenic shock, low blood pressure, heart rate slower than normal, heart block

Pharmacist Tips:

  • Avoid driving or operating machinery until you know how you respond as it may cause drowsiness.
  • For any treatment of beta-blockers, it is important to ‘start low and go slow’ until your body gets used to the medication.
  • Inderal may mask the symptoms of low blood glucose. Monitor your blood glucose level closely.

Common dosing schedule: 
Take on an empty stomach.

This schedule is for reference only, adjustments may be made according to individual needs.


Some common medications Inderal may interact with:

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Inderal in Hong Kong?

In Hong Kong, Inderal is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Inderal in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.

Available dosage
  • 10mg / 40mg (Tablets)
Drug class
Antihypertensives, Antiarrhythmics, Antianginal Agents
Sub class
Beta Blockers
Generic Names
Other drugs in same class
Used for: Ventricular arrhythmia, Supraventricular arrhythmia
Chinese name:
Used for: High blood pressure, Prevention and treatment of angina, Chronic heart failure
Chinese name:
Used for: High blood pressure, Prevention and treatment of angina, Chronic heart failure
Chinese name: