Propranolol is a non-selective beta-adrenergic receptor blocker (beta-blocker) used in the management of several cardiovascular and neurological conditions. Unlike beta-1-selective agents, propranolol blocks both beta-1 and beta-2 adrenergic receptors, reducing the physiological effects of adrenaline and noradrenaline throughout the body.
By blocking beta-1 receptors in the heart, propranolol can reduce heart rate, myocardial contractility, and cardiac workload. These effects contribute to its established use in conditions including hypertension, angina, certain cardiac arrhythmias, and following myocardial infarction in appropriate patients.
Propranolol also has established neurological applications. It is indicated for the prevention of migraine headaches and for management of essential tremor, where it can reduce the amplitude of involuntary rhythmic shaking. It does not cure these underlying conditions but can help reduce their frequency or severity while treatment is maintained.
Because beta blockade reduces physical responses to adrenaline, propranolol is also frequently prescribed off label for situational or performance related anxiety. In this setting, its effects are primarily directed toward physical symptoms such as a racing heartbeat, shaking, sweating, and tremor rather than the psychological causes of anxiety itself.
This product provides:
- Active Ingredient: Propranolol Hydrochloride
- Strength: 40mg per tablet
- Quantity: 50 Tablets
- Drug Class: Non Selective Beta Blocker
- Dosage Form: Oral Tablet
Health Canada’s Drug Product Database lists propranolol hydrochloride 40mg tablets as prescription medication, with approved 40mg formulations available in Canada.
Propranolol has important cardiovascular and respiratory safety considerations. Because it blocks beta-2 receptors in the lungs, it may cause bronchospasm and can be unsuitable for people with bronchial asthma or certain obstructive airway diseases. It can also produce excessive slowing of the heart rate or lowering of blood pressure in susceptible individuals.
Beta blockers can also mask some warning signs of low blood sugar, particularly a rapid heartbeat, which is important for patients with diabetes or those susceptible to hypoglycemia. Other potential effects can include dizziness, fatigue, cold extremities, sleep disturbances, and gastrointestinal symptoms.
Propranolol should generally not be stopped suddenly after regular use, particularly in patients with cardiovascular disease, because abrupt withdrawal can worsen angina and has been associated with serious cardiac complications. Discontinuation should therefore be managed according to the instructions of a qualified healthcare professional.
