Propranolol: What to Know About This Beta Blocker
Propranolol is a beta blocker used to treat high blood pressure, anxiety, migraines, and heart conditions. See how it works, common side effects, and what to expect.
What is Propranolol?
Propranolol is a beta blocker medication that works by slowing your heart rate and reducing the force of heart contractions. This lowers blood pressure and reduces the workload on your heart.
What It's Used For
Doctors prescribe propranolol for several conditions:
- High blood pressure (hypertension)
- Chest pain (angina)
- Heart rhythm problems (arrhythmias)
- Heart attack prevention
- Migraine headaches
- Anxiety and social anxiety disorder
- Essential tremor
- Hyperthyroidism symptoms
How It Works
Propranolol blocks beta receptors on nerve cells and heart tissue. This slows your heart rate, reduces the force of heart contractions, and widens blood vessels. The result is lower blood pressure and less oxygen demand from your heart.
Common Side Effects
Most people tolerate propranolol well. Side effects may include:
- Fatigue or tiredness
- Dizziness
- Cold hands or feet
- Nausea
- Trouble sleeping
- Shortness of breath (less common)
Side effects often decrease as your body adjusts to the medication.
Important Considerations
Do not stop propranolol suddenly without talking to your doctor. Stopping abruptly can cause your blood pressure to spike and increase heart attack risk. Your doctor will help you taper the dose if you need to stop.
Tell your doctor if you have asthma, diabetes, or slow heart rate before starting propranolol, as this medication can worsen these conditions.
Getting Started on Propranolol
Your doctor will start you on a low dose and increase it gradually based on how your body responds and your blood pressure readings. Most people take propranolol 2 to 4 times daily, though extended-release versions are available for once-daily dosing.
Regular blood pressure monitoring helps your doctor adjust your dose for best results.